the total surface area of a hemisphere is 4158cm sq. .find its diameter
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Answer:
diameter = 21√3 cm
Step-by-step explanation:
TSA = 4158 cm sq
We know that ,
TSA = 4πr^2
4158= 4 × 22/7 × r ^ 2
r = 18.18 cm
Diameter = r × 2 = 21 √3 cm
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