Question

The diameter and height of
cylindrical water tank are 2m
and 14m respectively. Find the cost of
painting its outer curved surface
area at the rate of 20. per sqm​

Answer 1

Answer:

Given, d=2 m and h=14 m.

Cost of painting =Rs. 150 /m

2

∴ exterior curved surface area of chimney=(2πr)h=(πd)h=

7

22

×2×14=88 m

2

∴cost of painting = Rs.88×150= Rs.13,200