please answer fast help
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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...
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...
Answered by
1
Diameter of circles D1 = 21 cm
D2 = 14cm
D3 = 7cm
R1 = 21/2cm
R2 = 14/2
= 7cm
R3 = 7/2 cm
Area of 1st circle = πr²
= 22/7(21/2)(21/2)
= 346.5cm²
area of 2nd circle = 22/7(7)(7)
= 154cm²
area of 3rd circle = 22/7(7/2)(7/2)
=38.5cm²
area of shaded region = 346.5 - 154 - 38.5
= 154cm²
D2 = 14cm
D3 = 7cm
R1 = 21/2cm
R2 = 14/2
= 7cm
R3 = 7/2 cm
Area of 1st circle = πr²
= 22/7(21/2)(21/2)
= 346.5cm²
area of 2nd circle = 22/7(7)(7)
= 154cm²
area of 3rd circle = 22/7(7/2)(7/2)
=38.5cm²
area of shaded region = 346.5 - 154 - 38.5
= 154cm²
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