Question

circumference of circle is 31.4 find its radius and its area

Answer 1

Find the radius:

Circumference = 2πr

31.4 = 2(3.14)

r = 3.14 ÷ 2(3.14) = 0.5 units

Find the area:

Area = πr²

Area = 3.14 x (0.5)² = 0.785 units²

Answer:0.785 units²

Answer 2

Here is your solution

Given:-

circumference of circle is 31.4

Find radius

we know that

circumference of Circle = 2πr

31.4= 2πr

$31.4 \div {2 \times 3.17} = r \\ 0.5 \: unit = r$

Area =πr^2

=3.14×0.5×0.5

=0.785unit^2

hope it helps you