The curved surface area of a cone whose circumference of the base is 66 cam and slant height is 12 cm
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Answer:The slant height can be calculated using the formula a^2 + b^2 = c^2. In the formula, a is the altitude, b is the distance from the center of the base to the point where the slant height segment starts, and c stands for the slant height.
Step-by-step explanation:
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Step-by-step explanation:
circumference of the base of the cone is = 2πr
circumference=66
66=2πr
66=2×22/7× radius
66×7/2×22 = radius
21/2 = radius
radius = 10.5
CSA of cone = πrl
= 22/7 × 10.5 × 12
= 22× 1.5× 12
= 396 sq. cm
HOPE YOU UNDERSTAND
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