the total surface area hemisphere is 389 sq.m. Find valume of hemisphere
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Ans. the total surface area of hemisphere= 389 sp.m
3πr^2 = 389
3× 22÷7×r^2= 389
r^2= 389×7÷22×3
r^2 = 41.2575
r = √41.2575
r = 6.4 ( approx)
volume of hemisphere= 4/3πr^3
= 4/3×22/7×6.4×6.4×6.4
= 1098.5081 m^3
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