1.

You the total surface area of the solid hemisphere in 462 CM square find the volume

Answer»

Let R = radius of solid hemisphere
Total SURFACE AREA of hemisphere = 462 cm2
⇒ 3π r^2 = 462
⇒ 3 × 22/7 × r^2 = 462
⇒ r^2 = 462 × 7 / 3 × 22
 r^2 = 49⇒ r = 7 cm
Now, Volume of hemisphere= 2/3π r^3
= 2/3 × 22/7 × (7)^3 
= 2/3 × 22/7 × 7 ×7 ×7
= 44 × 49/3 
= 718.67 cm3


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