Q4 of 44 Page 14

Find:

(i) the lateral surface,


(ii) the whole surface, and


(iii) the volume of a right circular cylinder whose height is 13.5 cm and radius of the base 7cm

Given: Radius of base, r = 7cm


Height , h = 13.5cm


(i) Lateral Surface Area of right circular cylinder = 2πrh



= 2×22×13.5


= 594cm2


(ii) Total Surface Area of cylinder = 2πrh + 2πr2


= 2πr(h + r)



= 2×22×20.5


= 902cm2


(iii) Volume of cylinder = πr2h



= 22×7×13.5


= 2079cm3


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