Question

Area of a circle is 314 cm2 . Find its circumference. (use π = 31.4)

Answer 1

radius is 10cm...........and circumference =2πr
2×3.14×10
=62.8cm

Answer 2

Area of circle= πr²
→314=3.14r²
→r=10cm.
Circumference of circle=2πr
=2×3.14×10
=62.8cm.