Q2 of 32 Page 250

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

Given that, the radius of cylinder(r) required is 7 cm and height (h) is 35 cm.

And, Surface area of cylinder is - 2πrh


⇒ Surface area


= 1540cm2


⇒The required area of thick paper sheet needed to make 100 cylinders = 1540 × 100 cm2


= 154000 cm2


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