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Sagot :
Solution
Given:-
- Radius of circle = 20 cm
Find:-
- Perimeter of circle
- Area of circle
Evaluation
Required Formula
[tex]\star{\boxed{\red{\tt{\:Area_{circle}\:=\pi\:r^2}}}}[/tex]
[tex]\star{\boxed{\pink{\tt{\: Perimeter_{circle}\:=\:2\:\pi\:r}}}}[/tex]
First Calculator,
==> Perimeter of circle = 2πr
Where,
- π = 22/7 = 3.14
- r = 20 cm
so,
==> Perimeter of circle = 2 × 3.14 × 20
==> perimeter of circle = 125.6 cm
Now, Calculate Area
==> Area of circle = πr²
==> Area of circle = 3.14 × 20²
==> Area of circle = 1256 cm²
Hence
- Perimeter of circle = 125.6 cm
- Area of circle = 1256 cm²
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