Question

The area of a circle is 616 cm². Find it's circumference.

Please help​

Answer 1

Step-by-step explanation:

Area of circle =pi r^2

616cm^2 =22/7×r^2

616×7/22 =r^2

196cm=r^2

$\sqrt{196}$

r=14cm

circumference =2pir

=2×22/7×14

circumference =88cm

Answer 2

Answer:

area = πr^2

=> 22/7 × r^2 = 616

=> r^2 = 616 × 7 / 22

=> r = root 196 = 14 cm

now circumference = 2πr = 2 × 22/7 × 14 = 88 cm

Step-by-step explanation:

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