Home » Past Questions » Mathematics » Calculate the surface area of a hallow cylinder which is closed at one end, if the base...

Calculate the surface area of a hallow cylinder which is closed at one end, if the base...


Question

Calculate the surface area of a hallow cylinder which is closed at one end, if the base radius is 3.5cm and the height 8cm.[take π = 22/7]

Options

A) 126.5cm2

B) 165cm2

C) 176cm2

D) 214.5cm2

E) 253.5cm2

The correct answer is D.

Explanation:

since it is an open cylinder; r= 3.5cm = 7/2cm
h= 8cm;
S.A = 2πrh + πr 2

= πr(2h + r)
(16 + 3.5); 11 x 19.5 = 214.5cm2


More Past Questions:


Dicussion (1)