2 years ago

Help I dont understand how to do this

Mathematics

1 answer:

Bezzdna [24]2 years ago

5 0

the formula for circumstance of a circle is:

C= 2×pi×r or C= pi×d (the diameter actually consists of 2 radiuses)

C= pi×7

≈21.99

C= 2×pi×9

=18×pi

≈56.55

C= 2×pi×5

=10×pi

≈31.42

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