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17-02-2021
Mathematics

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

Respuesta :

17-02-2021

Answer:

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

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