the slant height of a cone is 10 cm and the diameter is equal to its slant height then find lateral surface area
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Step-by-step explanation:
Given diameter of the base of the cone is 10 cm
∴ radius =5 cm. (∵ radius=
2
diameter
).
Also, the slant height of the cone =17 cm.
∴ The curved surface area of the cone is
′
πrl
′
.
r: radius of the base.
l: slant height.
S=πrl=π×5×17=85π cm
2
.
∴ curved surface area of the cone is 85π cm
2
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