If the diameter of hemisphere is 28 cm then, find the total surface area of hemisphere ? *
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Given : diameter of hemisphere is 28 cm ,
To find : total surface area of hemisphere
Solution:
Diameter of hemisphere = 28 cm
Radius of hemisphere = 28/2 = 14 cm
total surface area of hemisphere = Curved surface area + base surface area
= 2πr² + πr²
= 3πr²
using π = 22/7 & radius = 14 cm
= 3(22/7) (14)²
= 3 * 22 * 28
= 1848 cm²
1848 cm² is the total surface area of hemisphere
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