a cylinder is formed by rolling a sheet whose dimensions are 8.8cm × 2.8cm . find the radius of the cylinder.
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Answered by
40
when a rectangular sheet is formed into a cylinder.
the length becomes the height of the cylinder and the breadth becomes the circumference of the circle of the cylinder.
so, circumference=2πr
: 2.8cm=2×22/7×r
28/10=2×22/7×r
r= 28×7/10×2×7
r=1.4 cm
the length becomes the height of the cylinder and the breadth becomes the circumference of the circle of the cylinder.
so, circumference=2πr
: 2.8cm=2×22/7×r
28/10=2×22/7×r
r= 28×7/10×2×7
r=1.4 cm
Answered by
6
Answer:
1.4 cm
Step-by-step explanation:
WHEN RECTANGULAR SHEET IS ROLLED THE LENGTH BECOMES CIRCUMFERENCE OF BASE AND BREADTH BECOMES HEIGHT SO
8.8=2 PI r
8.8 *7/44 = r
1.4 cm = r
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