A well of diameter 150cm has a 30cm wide parapet running around it. Find the area of the parapet.
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A well of diameter 150cm has a 30cm wide parapet running around it. Find the area of the parapet.
A well of diameter 150cm has a 30cm wide parapet running around it. Find the area of the parapet.
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Verified answer
hey mate here's ur answer....
Step-by-step explanation:
Given diameter = 150cm.
Then the radius will be r = d/2
= 75 cm.
Given width = 30cm.
Outer radius of the parapet R = 75 + 30
= 105 cm.
The area of the parapet = pi(R^2 - r^2)
= pi((105)^2 - (75)^2)
= 22/7 * (11025 - 5625)
= 22/7 * 5400
= 16971.428 cm^2.
Hope this helps!
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