Question

Find the

(i) curved surface area

(ii) total surface area and

(iii) volume of a right circular cylinder whose height is 15 cm and the radius of the base is 7 cm.

Answer 1

Given,

Height of cylinder = 15 cm

Radius of base = 7 cm

(i) Curved surface area = 2πrh = 2 x \(\frac{22}{7}\) x 7 x 7 x 15 = 660 cm²

(ii) Total surface area =  2πr(h + r) = 2 x \(\frac{22}{7}\) x 7 x 22 = 968 cm²

(iii) Volume of cylinder =  πr²h = \(\frac{22}{7}\) x 7 x 7 x 15 = 2310 cm³