Q. 105.0( 2 Votes )

Answer :

Let height and slant height of the frustum be h and l.

Radius, r’ = 100m, r’’ = 50m

Volume of frustum = 44 × 10^{7} litres = 44 × 10^{4} m^{3}

Slant height, l =

⇒ l = 55.46m

Lateral surface area of the frustum = π l (r’ + r’’)

= 26145.4 m^{2}

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PREVIOUSA tent consists of a frustum of a cone capped by a cone. If the radii of the ends of the frustum be 13 m and 7 m, the height of the frustum be 8 m and the slant height of the conical cap be 12 m, find the canvas required for the tent.NEXTA metallic right circular cone 20 cm high and whose vertical angle is 90° is cut into two parts at the middle point of its axis by a plane parallel to the base. If the frustum so obtained be drawn into a wire of diameter (1/16) cm, find the length of the wire.

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