Question

if the total surface area of a solid hemisphere is 462 CM square find the volume take Pi equals to 22 by 7

Answer 1

Total surface area of hemisphere
=3πr^2
=3*22/7*r*r=462
or, 3*22*r^2=3234
or, 22*r^2=1078
or, r^2=49
or, r=7

Volume of Hemisphere
=2/3πr^3
=2/3*22/7*7*7*7
=2/3*22*49
=2156/3
=718.66 cu cm (approx)

Answer 2

Tsa of Hemisphere= 3×pi×r^2
Vol of Hemisphere= 2/3×pi×r^3