Question

The total surface area of hemisphere is 41.58sq cm. Find its CSA​

Answer 1

Answer:

C.S.A = 27.72 cm sq.

Step-by-step explanation:

T.S.A.=3×22÷7×r squre

3×22÷7×r square = 41.58

r square = 41.58 ×7 ÷ 3×22

r square = 4.41

r = 2.1

C.S.A. = 2×22÷7×2.1×2.1

C.S.A. = 4.2×6.6

C.S.A. = 27.72

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