Question

The circumference of circle is 616 m, find its radius and area

Answer 1

circumference=2 pi r
616=2×3.14×r
r=616/6.28
r=98 m
area = pi r^2
=3.14×98×98
=30156.56 m^2

Answer 2

Hello friend,
$circumferece = 2\pi \: r$
616m=2×22/7×r
616m×7/(22×2)=r
14m ×7=r
98m=radius
$area = \pi {r}^{2}$
A= 22/7 × 98m×98m
A=30184m^2
Hope it helped☺