the difference between the outer and inner curved surface area of a hollow circular cylinder 48 cm long is 88 cm square is the volume of metal used in making the cylinder is 176 cm square find the outer and inner diameter of the cylinder (anwer is 5 cm and 3 cm please answer with structure)
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Step-by-step explanation:
Radius of the base of the cylinder be 2x and its height
volume of a cylinder=πr
2
h
⇒π(2r)
2
(3x)=1617
x
3
=(
2
7
)
3
⇒x=3.5cm
r = 7 cm h = 10.3 cm.
surface area =πrh=2×
7
22
×7×10.5=462cm
2
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