Question

Hemisphere dome of stupa needs to be painted. the circumference of the base of dome is 17.6m. How much will it cost to paint the dome, if it is given that the rate of painting is rupees 100 per square metre.

Answer 1

Dear Friend,
circumference=17.6m
2Πr=17.6
r=17.6/2Π
r=8.8×7/22
r=2.8m
CSA of hemisphere=2Πr^2=2×22/7×2.8×2.8=49.28m^2
cost of painting 49.28m^2=49.28×100=Rs. 4928
hope it helps u.

Answer 2

Circumference=17.6m

2πr=17.6

r=17.6/2π

r=8.8x7/22

r=2.8m

CSA=2πr²

=2x22/7x2.8x2.8

=49.28m²

Cost=49.28x100= ₹4928