Nisha and her friends went to a picnic. They planned to make a tent in the shape of a hemisphere of diameter 42 cm . The cost of the cloth per 100 cm2 is ₹ 5. Find how much money is needed to buy the cloth for the hemispherical tent?
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Answer:
given,
d= 42cm
r= d/2=21 cm
rate/ 100cm²= 5rs.
amount of cloth = CSA/LSA of the tent
= 2πr²
= 2×22/7×(21)²
= 2×22×3×21
= 44×63
= 2772
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