a piece of paper having the form of a quadrant of a circle of diameter 28cm is rolled up so as to form a cone. find the radius of the base and curved surface area and volume of the cone
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CSA of the cone = area of the quadrant= 1/4 × π×14×14 = 153.86 cm^2= π r' L=3.14×r'×14
so, r'=3.5 cm
here L will be 14cm
let r' is the radius of the base
so, r'=3.5 cm
here L will be 14cm
let r' is the radius of the base
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