A circle is inscribed in a square whose perimeter is 40 cm, what is the diameter of the circle?

2 answers

40/4 = 10
Perimeter Of square = circumference of circle
Then,
Circumference of circle = 2¢ r
40 = 2 * 22/7 * r
140 = 22 * r
r = 140/22
r = 70/11
D = 140/11