Question

A well of diameter 150 cm has a stone parapet around it. If the length of the outer edge of the parapet is 616 cm find the weight of the parapet

Answer 1

Given, the diameter of the well (d) = 140 cm

Let radius and diameter of the parapet is R and D respectively.

Sine, length of the outer edge of the parapet = 616 cm.

Therefore,



Now, width of the parapet = ( diameter of the well - diameter of parapet )/2 = (d-D)/2 = (196-140)/2 = 28 cm

Hence, width of the parapet is 28 cm.

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