Answer:
Area =Pi r2
=3.14×10x10
=3.14×100cm2
=3.14cm2
Perimeter = 2 pi r
=2 ×3.14×10
=6.28cm
Or =Pi d
= 3.14 ×20cm
=62.8cm
Note:
R means radius
D means diameter
radius is half of a diameter e.g radius is10 and diameter is 20
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hoo this helps:)
