Question

28). If the perimeter of a circle is equal to that of a square, then the ratio of their areas is​

Answer 1

Step-by-step explanation:

let the radius be x.

then,

circumference of the circle = 2πr

= 2×22/7×r = 44r/7

area of circle = πr^2

= 22/7×r×r = 22r^2/7

perimeter of square = 4×s

44r/7 = 4×s

(44r/7)/4 = s

area of square = s×s

= {(44r/7)/4}^2

Now we can find the ratio.