SSC CHSL Model Paper 3

Question : 49 of 100

Marks: +1, -0

If the number of square centimetres on the surface area of a sphere is three times the number of cubic centimetres in its volume, then what is its diameter?

1 cm
2 cm
3 cm
6 cm

Validate

Solution:

According to question
Surface area of sphere=3 (Volume of sphere)
⇒

4πr^2=3×4/3πr^3⇒r=1

∴ Diameter

= 2 r = 2

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