Question

The diameter of the base of conical tank is 14 meters and its slant height is 17.5 meters. How much water can the tank hold?​

Answer 1

We know, the curved surface area of a cone = πrl, where r is the radius of the cone and l is the slant height.

Given, diameter of the tomb d = 25m.

Radius of the tomb =   $\frac{d}{2}$ =7m.

Hence, Curved Surface Area of the conical tomb = $\frac{22}{7}$ × 7 × 25

= 550 sq. m.

Cost of white washing the tomb at Rs. 210 per 100$m^{2}$= $\frac{210}{100}$ × 550= Rs. 1155.

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