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Class-VIII
Maths

Asked by Harshaditya Kaushal

Apr 14, 2013

Q1 find the least number which must be added to 7900 to obtain a perfect square?Q2 find the least number which must be subtracted from 2509 to make it a perfect square?

first find the square root of 7900.
by prime factorisation method
quotient+i 2=88+1=89...

Answer (18)
Class-VIII
Maths

Asked by Sunil

Sep 18, 2014

What is the fullform of CPCT ?

Corresponding parts of Congruent Triangles.

Answer (8)
Class-VIII
Maths

Asked by Upender

Aug 4, 2013

LINEAR EQUATIONS

IN A FRACTION , TWICE THE NUMERATOR IS 2 MORE THAN THE DENOMINATOR. IF 3 IS ADDED TO THE NUMERATOR AND TO THE DENOMINATOR, THE NEW FRACTION IS 2/3. FIND THE ORIGINAL FRACTION.

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Answer (3)
Class-VIII
Maths

Asked by Srija

Dec 8, 2013

please suggest a good hindi poem for my hindi recitation competition

Answer.

Select a poem on humanity and brotherhood .       

Answer (31)
Class-VIII
Maths

Asked by Astha Mohanty

May 29, 2015

Five years ago a man was seven times as old as his son. Five years hence, the father will be three times as old as his son. Find their present ages.

Answer.

Let the past age of son = x
Let the past age of father = 7x
So,
Present ages are x+5 and 7x+5
Future age of son = x+10
Future age of father = 7x+10

Answer (2)
Class-VIII
Maths

Asked by Manish

Feb 18, 2015

Find the compound interest on Rs 4000 for 2.5 years at 10% per annum.

Principal(P)  = Rs 4000

Ra...

Answer (1)
Class-VIII
Maths

Asked by Sheron

Aug 11, 2013

construct a rhombus of diagonals 6.4 and 5.2

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Answer (2)
Class-VIII
Maths

Asked by Nahan

Oct 28, 2013

Sum of the digits of a 2 digit number is 9 when we interchange the digits it is found that the resulting new number is greater than the orginal nimber by 27 ? what is 2
dear teacher am really confused with these kinda question would you like to help me solve this in a easy way ... hope you willl

Assume the digit in ones place as x and the digit in tens place is y
The original number is (10y + x)
Number obtained by reversing the digits = (10x + y)
Now check for the condition
...

Answer (1)
Class-VIII
Maths

Asked by Gurnoor kaur Dang

Jan 5, 2014

Q1. a 20 cm long iron pipe has exterior diameter equal to 25 cm. if the thickness of the pipe is 1 cm, find the whole surface area of the pipe .    



Q2. the areas of 3 adjacent faces of a cuboid are x,y,z.if d volume is V.prove V2=XYZ.



Q3. the rainwater which falls on the roof 18m long n 16.5 m wide is stored in a cylindrical tank of radius 4 m. if it rains 10 on a day, wat is d rise in d water level in d tank due to it ?

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Answer (2)
Class-VIII
Maths

Asked by Gurnoor kaur Dang

Nov 10, 2013

1200 soldiers in a fort had enough food for 28 days. after 4 days, some soldiers were transferred to another fort. as a result, the food now lasted for 32 more days. how many soldiers were transferred to another fort ? rply fasst..

Answer (5)

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