Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.
Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area. [ Assume π = 22/7 ]
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Radius (r) of the base of cone = (10.5/2) cm= 5.25 cm
Slant height (l) of cone = 10 cm
CSA of cone = πrl
= (22/7 x 5.25 x 10) cm2
= (22 x 0.75 x 10) cm2 = 165 cm2
Therefore, the curved surface area of the cone is 165 cm2.
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Answered
Diameter of the base of a cone, d = 10.5 cm.
height h = 10 cm.
Curved Surface Area, C.S.A. = ?
d = 10.5 cm, = 10\(\frac{1}{2} = \frac{21}{2}\)cm.
h = l = 10 cm.
∴ Curved Surface Area of a cone = πrl
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Answered