Question

the area of a circle is 15400 square metre find its circumference

Answer 1

area of circle = pie *r*r
7 * 15400 = 22* r^2
107800 / 22= r^2
Sq.root 4900 = r
70 m. = r

circumference of the circle = 2 pie r
= 2 * 22/7 * 70
= 44 * 10
= 440 m^2 Answer

Answer 2

Answer:

Step-by-step explanation:

area of circle=πr²

15400=πr²

r²=15400×7/22

r²=4900

r=70m²

circumference=2πr

=2×22/7×70

=440m²