The sum of the radius and the height of a solid cylinder is 37 cm If the total surface area of the solid is 1628cm2 find the circumference of the base
A
30 cm
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B
34 cm
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C
44 cm
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D
40 cm
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Solution
The correct option is C 44 cm r+h=37 cm Total surface area=1628 cm2 Also Total surface area= 2πr(r+h) ∴1628=2πr(37) or 2πr=162837=44 ∴ Circumference=44 cm '