a rectangular piece of paper 11 cm × 4 cm is folded without overlapping to make a cylinder of height 4 cm. find the volume of the cylinder.
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Answer:
Step-by-step explanation:
Circumference of the base of cylinder = Length of the rectangle
=> 2πr = 11
=> 2× 22/7 × r = 11
=> r = 7/4 cm
Height of the cylinder = 4cm (given)
Volume of the cylinder is πr2h
Substituting the values of 'r' and 'h' we get
=> (22 × 7 × 7 × 4) / (7 × 4 × 4)
=> 38.5 cm3
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