A rectangular piece of paper 11cm into 4cm is folded without overlapping to make a cylinder of heigh...........

Quantitative Aptitude ( CCS) Mensuration 3D

A rectangular piece of paper 11cm into 4cm is folded without overlapping to make a cylinder of height 4 cm. Find the volume of the cylinder.

16 cm³

14 cm³

18 cm³

21 cm³

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Explanation:

Height of the cylinder formed (h) = Length of the paper = 11 cm
Circumference of the base of the cylinder formed = breadth of the rectangle = 4 cm
2πr = 4
2 × 22/7 × r = 4
r = 4 × 1/2 × 7/22
r = 7/11 cm
Volume of the cylinder = πr²h
= 22/7 x 7/11 x 7/11 x 11
= (22 x 7) / (11)
= 2 x 7
= 14 cm³.

Hence, option 2 is the correct answer.