(Q10).A sports company was ordered to prepare 100 paper cylinders without caps 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.
Radius of the cylinder, r = cm
Height of the cylinder, h = cm
T.S.A. of the cylinder with lids at both ends = 2πr(r+h)
= ×× × ( + )
= ×× × = cm2.
Area of thin paper required for 100 cylinders = 100 × 1848