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Asked by Keisam Robin

Oct 11, 2013

Find the length of the longest rod that can be placed in a room 12 m long, 9 m broad and 8 m high.

Answer.

Given length l = 12 m

breadth b = 9 m and height h = 8 m

Longest rod that can be placed in a room is nothing but its diagonal.<...

Given length l = 12 m

breadth b = 9 m and height h = 8 m

Longest rod that can be placed in a room is nothing but its diagonal.<...

Asked by Shahnawaz

Jan 9, 2014

A cone ,hemisphere and a cylinder stand on equal base and have same height .then ratio of their volume is? Show it.

Answer.

Volume of cone = (1/3)Ï€r^{2}h

Volume of hemisphere = (2/3)

Volume of cone = (1/3)Ï€r

Volume of hemisphere = (2/3)

Asked by G Bhanuteja

Feb 27, 2014

Q. A semi circular sheet of metal of diameter 28 cm is bent into an open conical cup. Find the depth and capacity of cup.

Answer.

Given diameter = 28 cm

Radius, r = 14 cm

Circumference of semi circle = Ï€r

= (22/7) x 14 = 44 cm

This becomes circumference of base of cone

2

Given diameter = 28 cm

Radius, r = 14 cm

Circumference of semi circle = Ï€r

= (22/7) x 14 = 44 cm

This becomes circumference of base of cone

2

A sphere and a cube have the same surface area . show that the ratio of the volumes of the sphere to that of the cube is âˆš6 : âˆšÏ€.

Let

Asked by Keisam Robin

Oct 16, 2013

The outer dimensions of a closed wooden box are 10 cm by 8 cm by 7 cm. Thickness of the wood is 1 cm. Find the total cost of wood required to make box if 1 cmÂ³ of wood cost â‚¹2.00

Answer.

Given outer length = 10 cm

Outer breadth = 8 cm

Outer height = 7 cm

Outer volume = length Ã— breadth Ã— height

= 10 Ã— 8 ...

Asked by Abraham

Feb 4, 2015

Three cubes each of side 5 cm are joined to the end. find the surface area of the resultant cuboid.

Sol:

Given, each side of the cube is 5 cm.

When three cubes are joined end to end, then the resulting solid is a cuboid.

Length of the cuboid,

Asked by Kanishka Tayal

Mar 1, 2014

AB and CD are 2 parallel chords of a circle such that AB=10cm CD =24cm if 2 chords are on the opp side of the centre and the distance b/w them is 17cm find the radius of circle.

This answer has an image. Please click on the question to read more.

Asked by Dhruv Son

Mar 9, 2015

The length of longest pole that can be put in a room of dimensions (10m x 10m x 5m) is _________.

Length of the longest pole that can be put in a room = Length of the diagonal inside the room

Length of the diagonal = $<...$

Length of the diagonal = $<...$

Asked by Sahilrao

Nov 29, 2014

Write all the formulas in Surface areas and volumes.

l*b*h

Asked by Sreepriya

Feb 24, 2015

A sphere ,cylinder and a cone of same radius and same height find the ratio of their CSA.

Since, the height of a sphere is the diameter, the cone and cylinder have height 2r.

Then

Curved surface ar...