a heap of rice is in the form of a cone of base diameter 24m and height 3. 5m. find the volume of the rice. how much canvas cloth is required to just cover the heap
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Volume of rice = volume of cone = 1/3πr²h
Here , r = 12 [ ∵ diameter = 24 m ] and h = 3.5m
Now, volume of rice = 1/3 × 22/7 × (12)² × 3.5 m³
= 1/3 × 22/7 × 12 × 12 × 7/2 m³
=22 × 24 = 528 m³
Again, area of canvas cloth = curve surface area of cone = πrl
Here l = √(r² + h²)
= √{12² + 3.5²} = √{144 + 12.25 } = √{156.25} = 12.5 m
∴ area of canvas cloth = 22/7 × 12 × 12.5 m²
= 471.42 m²
Here , r = 12 [ ∵ diameter = 24 m ] and h = 3.5m
Now, volume of rice = 1/3 × 22/7 × (12)² × 3.5 m³
= 1/3 × 22/7 × 12 × 12 × 7/2 m³
=22 × 24 = 528 m³
Again, area of canvas cloth = curve surface area of cone = πrl
Here l = √(r² + h²)
= √{12² + 3.5²} = √{144 + 12.25 } = √{156.25} = 12.5 m
∴ area of canvas cloth = 22/7 × 12 × 12.5 m²
= 471.42 m²
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