The radius of a solid sphere is 14cm find the cost of painting its upper surface if cost of painting of 1cm square is 5paise
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radius = 14 cm
csa of sphere 4/3 *22/7* 14*14
=88*28 divide by 3
=2464 divide by 3
=821.3cm square
cost=821*5 divide by 100
=41 rupees
Answered by
1
Step-by-step explanation:
radius=14cm
base area=πr²
=22÷7×(14)² cm²
=22÷7×196 cm²
=616 cm²
cost of painting 1cm²= 5 paise
cost of painting 616cm²= 616×5 paise
=3080 paise
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