Question

if the volume and surface area of sphere are numerically equal,then how much is it's radius​

Answer 1

Answer:

Step-by-step explanation:

Volume= surface area

4*22*r*r*r/7*3=4*22*r*r/7

(4/3*4)r³=r² (after pie cancelled)

(1/3)r³ = r²

r³= 3r²

(r/r)(3-2)=3

r = 3

Answer 2

Answer:

Step-by-step explanation:

Surface area=volume

Thus,4πr^2=4/3πr^3

Hence,r=3