1.

A heap of rice is in the form of a cone of diameter 12 m and height 8 m . Find it's volume ? How much canvas cloth is required to cover the heap ?[ use π = 3.14 ] ​

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Answer:

GIVEN

A heap of rice is in the form of CONE

Diameter of cone = 12 m

2r = 12

r = 12 / 2

r = 6 m

It's height = 8 m

Volume of cone = 1/3 πr² h

1/3 × 3.14 × 6 × 6 × 8

3.14 × 12 × 8

301.44 m³

We know that

l² = h² + r²

8² + 6²

64 + 36

l² = 100

l = 100

l = 10

Later SURFACE AREA of cone = πrl

3.14 × 6 × 10

3.14 × 60

188.4 m²



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