Question

What is the radius and C.S.A of a cone made from a quadrant of a circle of radius 28cm?

Answer 1

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Curved surface area of the cone = πrl, where 'r' is the radius and 'l' is slant height of the cone. So, the radius of the cone is 7 cm. Answer. = 616 cm² = CSA of the cone also.

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Answer 2

Answer:

r=7cm

Step-by-step explanation:

1/4πr² = πrl

1/4 r² = rl

1/4*28²=28r

r=7