Calculate the circumference of a circle if its radius is 21 CM
Answers
Answered by
9
Answer:
circumference of a circle = 2πr
r = 21 cm
so circumference = 2 × 22/7 × 21
= 132 cm
Answered by
4
Answer: 132 cm²
Step-by-step explanation:
Circumference of circle = 2πr
= 2×(22/7)×21
= 2×22×3
= 132 cm²
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