A well of diameter 150 cm has a stone parapet around it. If the length of the outer edge of the parapet is 660cm then find the width of the parapet.
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. 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 = 660 cm =)2R = 660 / π =) 2R=(660 x 7 )/22 =) R = 210/2 cm
Therefore,R=105 R = 210 cm.
Now, width of the parapet = ( Radius of parapet - Radius of the well) = (105 -75 ) = 30 cm
Hence, width of the parapet is 30 cm.
hope this helps you:)
. 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 = 660 cm =)2R = 660 / π =) 2R=(660 x 7 )/22 =) R = 210/2 cm
Therefore,R=105 R = 210 cm.
Now, width of the parapet = ( Radius of parapet - Radius of the well) = (105 -75 ) = 30 cm
Hence, width of the parapet is 30 cm.
hope this helps you:)
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