What will be the Diameter? If

If the volume of a sphere is numerically equal to its surface area, then its diameter is:

  1. 2 cm
  2. 3 cm
  3. 4 cm
  4. 6 cm
Monis Rasool Professor Asked on 29th August 2015 in Maths.
Add Comment
1 Answer(s)

Answer: (4) 6 cm

Explanation:-
Formula –
The volume of the sphere = 4 pai r3/3

And the surface area of the sphere = 4 pai r2

If the volume of a sphere is numerically equal to its surface area,
Then, 4 pai r3/3  = 4 pai r2
r = 3
Then, the diameter of the sphere = 2 x r = 2 x 3
= 6 cm

Hence, the answer is (4) 6 cm.

Anurag Mishra Professor Answered on 31st August 2015.
Add Comment

Your Answer

By posting your answer, you agree to the privacy policy and terms of service.