The Question : The curved surface area of a right circular cone is 12320 cm². If the radius of its base is 56cm, then find its height.
Solution for the question :
Curved surface area =12320 cm2Radius of base (r) = 56 cmLet slant height = ℓ CSA (cone) = πrl = 12320 22/7 × 56 × ℓ = 12320 ℓ = 70 cm Height of the cone (h) = √ ℓ2 – r2 = √702 − 562 = 42 cm
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