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Answer Key
Grade 7 Math: Circles — Circumference & Area
1.
C = πd
2.
C = 2πr
3.
A = πr²
4.
31.4 cm
5.
50.24 cm²
6.
31.4 m
7.
6 ft
8.
20 cm
9.
6 ft
10.
20 cm
11.
5 ft
12.
100π
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