Question

in in a field dry fodder for the cattle is heap in conical shape the height of cone is 2.1 M and diameter of base is 7.2 M find the volume of the folder if it is to be covered by polythene in rainy season then how much minimum polythene sheet is needed ​

Answer 1

if. it. helps. you. please. mark. it. as. the. branies

Answer 2

The volume of the folder is 28.512 cubic m and polythene required is 47.154 sq.m.

Step-by-step explanation:

Height of cone = 2.1 m

Diameter of cone = 7.2 m

Radius of cone =$\frac{7.2}{2}= 3.6 m$

Volume of cone = $\frac{1}{3} \pi r^2 h = \frac{1}{3} \times \frac{22}{7} \times 3.6^2 \times 2.1=28.512 m^3$

Curved surface area of cone = $\pi r \sqrt{h^2+r^2}=\frac{22}{7} \times 3.6 \times \sqrt{2.1^2 +3.6^2}=47.154 m^2$

Hence  the volume of the folder is 28.512 cubic m and polythene required is 47.154 sq.m.

#Learn more:

A heap of rice is in the form of a cone of base diameter 24 m and height 3.5 m.

Find the volume of the rice. How much canvas cloth is required to just cover the

heap?​

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