Question

CSA of conical tank with height 3m and radius 8m is _____m²​

Answer 1

Answer:

height=h=3m

radius=r=8m

lateral height=l=root(height^2+radius^2)

=root(3^2+8^2)

=root(9+64)

=root73

CSA=pierl

=(22/7)*8*root73

=(22/7)*8*8.544

=214.820m^2

=214.82m^2

Hope it helps

Answer 2

Given:-

• Height = 3m
• Radius = 8m

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To find:-

• CSA of the cone.

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Solution:-

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We have height and radius of the cone, but we need to find the slant height of the cone.

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• $\sf{l = \sqrt{r^2 + h^2}}$

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• $\sf{l = \sqrt{(8)^2 + (3)^2}}$

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• $\sf{l = \sqrt{64 + 9}}$

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• $\sf{l = \sqrt{73}}$

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Now, CSA of a cone is given by

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☆ CSA = πrl

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Putting the values

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$\tt\longmapsto{CSA = \dfrac{22}{7} \times 8 \times \sqrt{73}}$

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$\tt\longmapsto{CSA = \dfrac{176}{7} \times \sqrt{73}}$

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$\tt\longmapsto{CSA = 25.14 \times 8.54}$

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$\bf\longmapsto{CSA = 214.69}$

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Hence,

• CSA of the cone is 214.69 m².