The perimeter of a semi circle is 144 cm then the radius is?
25 cm
28 cm
30 cm
35 cm
Explanation:
36/7 r = 144 => r = 28
Next Question
A paper is in a square form whose one side is 20 cm. Two semi circles are drawn on its opposites as diameters. If these semi circles are cut down what is the area of the remaining paper?