1.

Find the volume of a right circular cone having base radius of 60 cm and curved surface area 13200 sq.cm? Assume π = 22/71). 135960 cu.cm2). 145412 cu.cm3). 184268 cu.cm4). none

Answer»

⇒ Given, curved SURFACE AREA of the CONE = 13200 sq.cm

⇒ π × r × L = 13200

⇒ π × 60 × l = 13200

⇒ l = 70 cm

We KNOW that height = √(l2 – r2) = √(702 – 602) = 36.05 cm

⇒ Volume of the cone = 1/3 × π × r2 × h = 1/3 × π × (60)2 × 36.05 = 135960 cu.cm


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