Question

if the area of a circle is 15400cm²,find its radius and circumference​

Answer 1

Answer:

here

area of a circle = 15400 cm^2

radius=?

circumference =?

now,

area of circle= Pi R Square

1500cm^2 = 3.14×r^2

1500cm^2÷3.14 = r^2

$\sqrt[4900]{?} = r { \\ }^{2}$

r= 70