a path 2 m wide surrounds a circular pond of diameter 40 m . How many cubic meter of grave are required to grave the path to a depth of 7 cm
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Given
Dia of pond =40m
Width of path=2m
(check diagram in image)
Area of path = area of outer circle - area of inner circle
=pi R²- pi r²
=pi(R²-r²)
R=20+2=22
r=20
=pi (484-400)
=22/7 x 84
=264m²
Grave requires=area of path x depth
Depth=7cm =0.07m
=260x0. 07
=18.48m³
This is ur ans hope it will help you in case of any doubt comment below
Dia of pond =40m
Width of path=2m
(check diagram in image)
Area of path = area of outer circle - area of inner circle
=pi R²- pi r²
=pi(R²-r²)
R=20+2=22
r=20
=pi (484-400)
=22/7 x 84
=264m²
Grave requires=area of path x depth
Depth=7cm =0.07m
=260x0. 07
=18.48m³
This is ur ans hope it will help you in case of any doubt comment below
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answer point mai aa rha h pr meri book mai
18.48 answer aa rha
ya wait that is 7cm
check it now and tnx for brainliest
ur welcum nd thnks for solution
np
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