The curved surface area of a cylindrical road is `132 cm^2`. Find its length if the radius is 0.35cm.

Explanation

Given that
Curved surface area of cylindrical road =`132 cm^2`
Radius of road =`0.35 cm`
Let length of road be` h cm`
using the formula
Curved surface area of cylindrical road = `2pirh`
So, `2pirh = 132`
` 2 xx 22/7 xx 0.35 xx h=132`
` h= 132xx7 / 2xx22xx0.35`
`924 / 15.4`
`60cm`
Length of road is `60 cm`.