Question

A sports company was ordered to prepare 100 paper cylinders for shuttle cocks. The required dimensions of the cylinder are 35 cm length /height and its radius is 7 cm. Find the required area of thin paper sheet needed to make 100 cylinders?

Answer 1

Given,

h = 35cm
r = 7cm

Curved surface area of 1 cylinder =

$2 \times \frac{22}{7} \times r \times h \\ = 2 \times \frac{22}{7} \times 7 \times 35 \\ = 2 \times 22 \times 35 \\ = 1540 {cm}^{2}$
Therefore area of papersheet needed to make 100 such cylinder =

1540×100

= 154000 square cm.

Hope it helps.