4. The height of a cylinder is 18 cm
and the redius of the base is 7cm.
what its total surface
Area ? ?
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Answer:
Radius of cylinder r = 7 cm
Height of cylinder h = 18 cm
Total surface area of Cylinder
= 2*pi*r (r + h)
= 2*22/7*7(7 + 18)
= 44*25
= 1100 cm^2
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