Question

If the total surface area of a solid hemisphere is 462 cm2, find its volume.

Answer 1

1. radius is 7cm
2. Explanation:

v=2/3piercube

=2/3×22/7×7×7×7

=2156/3

=718.67cmcube

Answer 2

Explanation:

here

total surface area(TSA)= 462 cm²

TSA=3πr²

462 = 3*22/7*r²

462*7=66r²

3,234=66r²

3,234/66=r²

49=r²

√(49=r

r=7

therefore the radia of the hemisphere is 7

now,

volume of hemisphere(V) = (2/3)πr²

V=(2/3)*(22/7)*7²

V=44*7

V=308