Question

Find the cost of polishing a circular table-top of diameter 1.6 m, if the rate of polishing is Rs 15/m². (Take π = 3.14)

Answer 1

Answer:

from the given info the area of the circle table top is 2.0096.so the cost to paint it was Rs.30.144

Answer 2

Answer:

Diameter=1.6m

Radius=1.6/2=0.8

Area=3.14×0.8×0.8

Cost occur while polishing 1msq

area=Rs 15

cost occur while polishing 2.0096msq

Area=15×2.0096=30.14

so,it will cost Rs 30.14 while polishing such circular table......