Question

area of circle is 420 find circumference​

Answer 1

Step-by-step explanation:

the answer is c=72.2

becouse r=11.5

Answer 2

Answer:

72.6unit

Step-by-step explanation:

area of circle : π r ^2

420 = 22/7 × r^2

420×7/22 = r^2

133.63= r^2

11.55unit = r

circumference= 2πr

• 2×22/7×11.55
• 72.6 unit

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