Find the circumference of a circle whose area is 49πcm^2

Question

Find the circumference of a circle whose area is 49πcm^2

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6 months 2021-08-01T23:24:21+00:00 1 Answers 5 views 0

14π

Step-by-step explanation:

→ State the area formula

π × r² = 49 π cm²

→ Solve by dividing both sides by π

r² = 49

→ Square root both sides

r = 7

→ Substitute into circumference formula

2 × π × r ⇔ 2 × π × 7 ⇔ 14π