Question

if the total surface area of a solid hemisphere is 462mpower2.find its volume

Answer 1

TSA of hemisphere = 462 m^2

=> 3 pi *r^2 = 462

=> 3*22* r^2 /7 = 462

=> r^2 = 462 * 7 / 22 * 3

=> r^2 = 21*7/3

=> r^2 = 7* 7

=> r = 7 m

Volume = 2 pi r^3 /3

= 2* 22 * 7 * 7 * 7 / 3* 7

= 44 * 49 / 3

= 2156 / 3

= 718.67 m^3

Answer 2

TSA of hemisphere = 462 m sq.
3πr^ 2 =. 462
3 ×22/7×r^2 = 462
66/7× r^2 = 462
R^2 = 462 × 7/66
= 7 ×7
R = √49
R = 7 m
So , volume of hemisphere = 2/3 πr^3
=. 2/3 × 22/7 × 7×7×7
=. 44×49/3
=. 2156/3
= 718.6 m sq.
I hope it's help you .....
PLZZ marks as brain list ......