A hollow hemispherical vessel has external and internal diameter as 43 cm and 42 CM respectively if cost of colouring it is 7 Paisa per square centimetre then find cost of painting the vessel
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surface area 2π(r)^2
now according to the question 2π(43-42)^2
2π(1)^2
6.28cm sq.
cost of painting 7p per sq. cm
then 7*6.28
43.96 Paisa
hope this answer will help you
now according to the question 2π(43-42)^2
2π(1)^2
6.28cm sq.
cost of painting 7p per sq. cm
then 7*6.28
43.96 Paisa
hope this answer will help you
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