the curved surface area of cylinder is 2640 square and its volume is 26400 cm find the curved surface area of a right circular cone which has the same base and height of the cylinder
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Therefore the surface area of a right circular cone is = 4179.5
Step-by-step explanation:
Given
The curved surface area of cylinder is 2640 and its volume is 26400
According to problem
.......(1) and .........(2)
Dividing equation (2) by equation (1)
⇔r=20 cm
Putting the value of r in equation (1)
⇔h =
⇔h = 42 cm
Therefore the surface area of a right circular cone is =
= 4179.5 (approx) [ here r=20 cm and h = 42 cm]
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