if radius of a circle is 21 cm, then it's area is cm^2
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2
Answer:
radius of a circle is 21 cm then it's area is 1386 cm square
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4
Step-by-step explanation:
Given, radius r=21cm and π=
7
22
Then,
Area of the circle = πr
2
sq units
=
7
22
×21×21
=22×3×21
=1386cm
2
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