Question

If the area of a cricle is 154cm2 then its circumference is

Answer 1

Answer:

√49 = r. 7cm = r. Perimeter of circle = circumference of circle. Therefore, circumference of circle = 2Πr.

Answer 2

Answer:

Step-by-step explanation:

area=154cm square

area=pi r square

154cm=22/7×r ×r

154cm×7/22=r×r

49cm=r square

r=7cm

circumference =2 pi r

2×22/7×7cm

2×22cm

44cm