the diameter of the three circle in this figure are 21 CM 14 cm and 7 cm what is the area of the shaded region
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Answered by
284
here's ur answer frnd!!!
diameter of the biggest circle=21cm
radius=21/2=10.5cm
area=πr²
=22/7×10.5×10.5
=2425.5/7
=346.5cm²
diameter=14cm
radius=14/2=7cm
area=πr²
=22/7×7×7
=22×7
=154cm²
diameter of smallest circle=7cm
radius=7/2=3.5cm
area=πr²
=22/7×3.5×3.5
=269.5/7
=38.5cm²
area of shaded part=346.5-(154+38.5)
=346.5-192.5
=154cm²
hope this helps u...
there is no diagram I I have solved this before so I knew
diameter of the biggest circle=21cm
radius=21/2=10.5cm
area=πr²
=22/7×10.5×10.5
=2425.5/7
=346.5cm²
diameter=14cm
radius=14/2=7cm
area=πr²
=22/7×7×7
=22×7
=154cm²
diameter of smallest circle=7cm
radius=7/2=3.5cm
area=πr²
=22/7×3.5×3.5
=269.5/7
=38.5cm²
area of shaded part=346.5-(154+38.5)
=346.5-192.5
=154cm²
hope this helps u...
there is no diagram I I have solved this before so I knew
sirnaresh77p35sxk:
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thanks of lot
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but what is the meaning of how many days will it take something like this
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42
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