A rectangular sheet of paper 40cm×22cm is roled to form a hollow cylinder of height 40cm fint the radius of the cylinder
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Answer : r=3.5cm
Step-by-step explanation:
h = 40 cm
when the sheet is rolled 22 cm becomes the circumference of the base circles.
circumference = 22 cm
2 π r = 22 cm
2×22/7×r = 22 cm
r = 22×1/2×7/22
r = 7/2
r = 3.5
Hope it helped
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