Question

the area of a circle is 15400m2find it circumference

Answer 1

The area of a circle is given by the formula A = π r2, where A is the area and r is the radius. The circumference of a circle is C = 2 π r. If we "solve for r" in the second equation, we have r = C / (2 π ).

Answer 2

πr²=15400,

22/7 × r²=15400,

r²=15400 ×7/22,

r²=700 ×7,

r=√(700×7),

r=√(7×7×10×10),

then
r=7×10=70 me,


therefore

circumference of the circle=2πr,

=2×22/7×70,

=2×22×10,

=440 m