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Harmanpreet
May 3, 2014
Want solution to this question.....
Rita
Feb 8, 2015
Find the area of a circle circumscribing an equilateral triangle of side 15 cm.
Devanshi Kulkarni
Jan 2, 2015
The length of minute hand of a clock is 14 cm. Find the area swept by the minute hand in 15 minutes.
In 15 minutes, the minutes hand of the clock rotates by 90°.
∴ Area cove...
Devanshi Kulkarni
Jan 2, 2015
Calculate the total length of the metal wire required to make a set of ear-rings.
Length of the wire in the shape of smaller arc = perimeter of the semicircle with diamter of 14 mm
= 1/2 [ 2 x 22/7 x 7]
= 22 mm
Length of the wire in the shape of longer arc = ...
Chayan Mukherjee
Apr 2, 2014
1. A car takes one hour to cover 47.52 km. If the diameter of its wheels is 84 cm, find the number of revolutions made by a wheel in one second.
2. The minute hand of a clock traces an area 51â…“ cm2 in 20 minutes. Find the length of the minute hand.
3. A thin wire 66 m long is bent in the form of a circle and kept on the ground. Find the area of the ground enclosed by the wire.
4. A piece of wire when bent to form of a circle will have a radius of 84 cm. if the wire is bent to form a square, what would be the length of a side of the square.
5. A path of uniform width encloses a circular field. The external and the internal perimeters of the path are 500 m and 300 m. Find the width of the path.
6. A circular pond of diameter 40 m is surrounded by 5 m broad pathway. Find the area of the path.
7. A horse is tethered at the corner of a rectangular field by a rope 7 m long. Find the largest area of the field in which the horse can graze.
8. From the four corners of a square paper of side 24 cm, quarter circles with centres at the vertices of the square are cut off. If the radius of each of the quarter is 7 cm, find the area of the paper left.
9. From the three corners of a triangular paper, each side of which is 2k cm long, sectors of circles of the radius k cm are cur off with centre at vertices of the triangle. What portion of the paper is left?
10. A bucket is raised from a well by means of a rope which is wound round a wheel of diameter 77 cm. Given that the bucket ascends in 1 minutes 28 seconds with a uniform speed 1.1 m/s, calculate the number of complete revolutions the wheels makes in raising the bucket. ( Take π = 22/7)
2. The minute hand of a clock traces an area 51â…“ cm2 in 20 minutes. Find the length of the minute hand.
3. A thin wire 66 m long is bent in the form of a circle and kept on the ground. Find the area of the ground enclosed by the wire.
4. A piece of wire when bent to form of a circle will have a radius of 84 cm. if the wire is bent to form a square, what would be the length of a side of the square.
5. A path of uniform width encloses a circular field. The external and the internal perimeters of the path are 500 m and 300 m. Find the width of the path.
6. A circular pond of diameter 40 m is surrounded by 5 m broad pathway. Find the area of the path.
7. A horse is tethered at the corner of a rectangular field by a rope 7 m long. Find the largest area of the field in which the horse can graze.
8. From the four corners of a square paper of side 24 cm, quarter circles with centres at the vertices of the square are cut off. If the radius of each of the quarter is 7 cm, find the area of the paper left.
9. From the three corners of a triangular paper, each side of which is 2k cm long, sectors of circles of the radius k cm are cur off with centre at vertices of the triangle. What portion of the paper is left?
10. A bucket is raised from a well by means of a rope which is wound round a wheel of diameter 77 cm. Given that the bucket ascends in 1 minutes 28 seconds with a uniform speed 1.1 m/s, calculate the number of complete revolutions the wheels makes in raising the bucket. ( Take π = 22/7)
Post each question individually to get quick answer.
Fahad Kolharkar
Dec 12, 2014
what is the minimum area of a right-angled triangle whose inradius is 1 unit?
Devanshi Kulkarni
Jan 5, 2015
Find the area of the shaded region.
Area of unshaded region of quadrant of a square = [Area of two quadrants - Area of the quadrant of the square]
= 2[1/4 x 22/7 x 7 x 7] - [7 x 7]
= 77 - 49
= 28
To...
Devanshi Kulkarni
Jan 2, 2015
Prove that i) ∠CED=3∠CBD ii) CD=DA
(i) Let ∠CBD = x.
∠COD = 2x [Angle made by arc at the centre is twice the angle made by it at any point on the remaining part of the circle.]
∠OCD = 2x [Alternate ang...
Devanshi Kulkarni
Jan 2, 2015
In the figure there are 5 squares each of side 2 cm.
(i) Find the radius of the circle.
(ii) Find the area of the shaded region ( Take π=3.14)
(i) Find the radius of the circle.
(ii) Find the area of the shaded region ( Take π=3.14)
3080 cm3 of water is required to fill a cylindrical vessel completely and 2310 cm3 of water is required to fill it upto 5 cm below the top. Find :
(1) radius of the vessel.
(2) height of the vessel.
(3) wetted surface area of the vessel when it is half-filled with water.
(1) radius of the vessel.
(2) height of the vessel.
(3) wetted surface area of the vessel when it is half-filled with water.
Harmanpreet
May 3, 2014
Want solution to this question.....
Rita
Feb 8, 2015
Find the area of a circle circumscribing an equilateral triangle of side 15 cm.
Devanshi Kulkarni
Jan 2, 2015
The length of minute hand of a clock is 14 cm. Find the area swept by the minute hand in 15 minutes.
In 15 minutes, the minutes hand of the clock rotates by 90°.
∴ Area cove...
Devanshi Kulkarni
Jan 2, 2015
Calculate the total length of the metal wire required to make a set of ear-rings.
Length of the wire in the shape of smaller arc = perimeter of the semicircle with diamter of 14 mm
= 1/2 [ 2 x 22/7 x 7]
= 22 mm
Length of the wire in the shape of longer arc = ...
Chayan Mukherjee
Apr 2, 2014
1. A car takes one hour to cover 47.52 km. If the diameter of its wheels is 84 cm, find the number of revolutions made by a wheel in one second.
2. The minute hand of a clock traces an area 51â…“ cm2 in 20 minutes. Find the length of the minute hand.
3. A thin wire 66 m long is bent in the form of a circle and kept on the ground. Find the area of the ground enclosed by the wire.
4. A piece of wire when bent to form of a circle will have a radius of 84 cm. if the wire is bent to form a square, what would be the length of a side of the square.
5. A path of uniform width encloses a circular field. The external and the internal perimeters of the path are 500 m and 300 m. Find the width of the path.
6. A circular pond of diameter 40 m is surrounded by 5 m broad pathway. Find the area of the path.
7. A horse is tethered at the corner of a rectangular field by a rope 7 m long. Find the largest area of the field in which the horse can graze.
8. From the four corners of a square paper of side 24 cm, quarter circles with centres at the vertices of the square are cut off. If the radius of each of the quarter is 7 cm, find the area of the paper left.
9. From the three corners of a triangular paper, each side of which is 2k cm long, sectors of circles of the radius k cm are cur off with centre at vertices of the triangle. What portion of the paper is left?
10. A bucket is raised from a well by means of a rope which is wound round a wheel of diameter 77 cm. Given that the bucket ascends in 1 minutes 28 seconds with a uniform speed 1.1 m/s, calculate the number of complete revolutions the wheels makes in raising the bucket. ( Take π = 22/7)
2. The minute hand of a clock traces an area 51â…“ cm2 in 20 minutes. Find the length of the minute hand.
3. A thin wire 66 m long is bent in the form of a circle and kept on the ground. Find the area of the ground enclosed by the wire.
4. A piece of wire when bent to form of a circle will have a radius of 84 cm. if the wire is bent to form a square, what would be the length of a side of the square.
5. A path of uniform width encloses a circular field. The external and the internal perimeters of the path are 500 m and 300 m. Find the width of the path.
6. A circular pond of diameter 40 m is surrounded by 5 m broad pathway. Find the area of the path.
7. A horse is tethered at the corner of a rectangular field by a rope 7 m long. Find the largest area of the field in which the horse can graze.
8. From the four corners of a square paper of side 24 cm, quarter circles with centres at the vertices of the square are cut off. If the radius of each of the quarter is 7 cm, find the area of the paper left.
9. From the three corners of a triangular paper, each side of which is 2k cm long, sectors of circles of the radius k cm are cur off with centre at vertices of the triangle. What portion of the paper is left?
10. A bucket is raised from a well by means of a rope which is wound round a wheel of diameter 77 cm. Given that the bucket ascends in 1 minutes 28 seconds with a uniform speed 1.1 m/s, calculate the number of complete revolutions the wheels makes in raising the bucket. ( Take π = 22/7)
Post each question individually to get quick answer.
Fahad Kolharkar
Dec 12, 2014
what is the minimum area of a right-angled triangle whose inradius is 1 unit?
Devanshi Kulkarni
Jan 5, 2015
Find the area of the shaded region.
Area of unshaded region of quadrant of a square = [Area of two quadrants - Area of the quadrant of the square]
= 2[1/4 x 22/7 x 7 x 7] - [7 x 7]
= 77 - 49
= 28
To...
Devanshi Kulkarni
Jan 2, 2015
Prove that i) ∠CED=3∠CBD ii) CD=DA
(i) Let ∠CBD = x.
∠COD = 2x [Angle made by arc at the centre is twice the angle made by it at any point on the remaining part of the circle.]
∠OCD = 2x [Alternate ang...
Devanshi Kulkarni
Jan 2, 2015
In the figure there are 5 squares each of side 2 cm.
(i) Find the radius of the circle.
(ii) Find the area of the shaded region ( Take π=3.14)
(i) Find the radius of the circle.
(ii) Find the area of the shaded region ( Take π=3.14)
3080 cm3 of water is required to fill a cylindrical vessel completely and 2310 cm3 of water is required to fill it upto 5 cm below the top. Find :
(1) radius of the vessel.
(2) height of the vessel.
(3) wetted surface area of the vessel when it is half-filled with water.
(1) radius of the vessel.
(2) height of the vessel.
(3) wetted surface area of the vessel when it is half-filled with water.