Question

A rectangular piece of iron sheet measuring 50cm by 100cm is rolled into cylinder of height 50cm. If the cost of a
painting the cylinder is Rs 50 per square metre, then what will be the cost of painting the outer surface of the cylinder? ​

Answer 1

Step-by-step explanation:

2πr=100

r=1/2π meter

to paint outer surface =2πrh

=2π*1*50*50/2π

=2500