Mensuration Practice Test 11

Let radius of A = r
And radius of B = R
If Surface area of A = 1
Then surface area of B = 4 [∵ it is 300% higher]

4πr2

4πR2

=

1

4

r

R

= √

1

4

r

R

=

1

2

So, if r = 1
Then R = 2

Volume‌of‌A

Volume‌of‌B

=

4 3 πr3

4 3 πR3

=

(1)3

(2)3

=

1

8

So, if volume of A = 1
Then volume of B = 8
Volume of B is

7

8

times more than the volume of A

7

8

×100 = 87.5 times