Math, asked by singhsakshi445599, 12 hours ago

A well of diameter 160 cm has a concrete parapet around it. The length of the outer edge of the parapet is 700 cm. Find the width of the prarapet

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Answered by ajayjaiswal1
0

Answer:

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A well of diameter 150 cm has a stone parapet around it. If the length of the outer edge of the parapet is 660 cm, then the width of the parapet is ___________.

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Correct option is A)

Given, the Diameter of the well (d) =150 cm.

Therefore radius of well =75 cm

Let radius and diameter of the parapet is R respectively.

Since, length of the outer edge of the parapet =660 cm.

Therefore,

⇒2πR=660cm

⇒2R=

π

660

⇒2R=

22

(660×7)

⇒R=

2

210

cm

Therefore, R=105cm

Now, width of the parapet = ( Radius of parapet - Radius of the well) =(105−75)=30cm

Hence, width of the parapet is 30 cm

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