Question

A circular pit whose diameter is 7cm and depth is 4m is dug in the ground and the soil is spread over a plot which is 38.5m long and 12m wide . find the height of the soil above the ground​

Answer 1

Answer:

I guess it should be 7(m) instead of 7(cm) as it's highly improbable. If so , then ↓. if not , then no worries , I found the whole solution in (m) u start the same process by converting the units of all values in cm ( as it would be easier ).

Step-by-step explanation:

diameter of pit = 7m

radius = 3.5m

height = 4m

therefore, the formed shape of the pit = cylinder

volume of cylinder = πr²h

= 22/7 × (3.5)² × 4

= 22/7 × 12.25 × 4

= 22 × 1.75 × 4

= 38.5 × 4

= 154m³

now, area of the plot = 12 × 38.5

= 462m²

height of the spread soil on the plot = 154/462

= 0.33m or 33cm

hope it helped.

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