A rectangular piece of paper 11cm*4cm is folded without overlapping to make a cylinder of height 4cm . find volume of cylinder
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Answer:
the circumference of the bottom of the cylinder will be 11cm
so
2 pi r=11
r=7/4
and the area of cross sectoin will be pi r^2=(22/7)X(7/4)X(7/4)=77/4
VOLUME WILL BE CROSS SECTION MULTIPLT BY HIGHT = 77/7X4=77
VOLUME IS 77CM SQ
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