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Nimfa-mama [501]
3 years ago
15

The perimeter of a circle=πr², where π=22/7. find the area of r=21cm ​

Mathematics
1 answer:
Serjik [45]3 years ago
7 0

EXPLAINATION:  \pi r^2=\frac{22}{7} .21^2=\frac{22}{7} .441=\frac{22.441}{7} =\frac{22.63.7}{7} =22.63=1386  

ANSWER: 1386 cm^2

Ok done. Thank to me :>

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