Mathematics

Problem

A cylindrical pipe has radius

3.5\,\text{m}

and length

5\,\text{m}

. Find the cost of painting its outer curved surface at Rs

12

per square metre. Take

\pi = \dfrac{22}{7}

. a) Rs

2\,640

b) Rs

1\,320

c) Rs

660

d) Rs

2\,244