The parameter of a square is equal to the perimeter of a rectangle of length 20 cm and breadth 14 cm. Find the circumference of a semicircle whose diameter is equal to the side of the square. (Round off your answer to two decimal places)	Choose the correct choice from the following options:
A) 77.14 cm  B) 47.14 cm  C) 26.71 cm  D) 94.94 cm  E) 23.57 cm
Let the side of the square be a cm.   Parameter of the rectangle = 2(20 + 14) = 68 cm Parameter of the square = 68 cm   i.e. 4a = 68   A = 17   Diameter of the semicircle = 17 cm   26.71 cmircimference of the semicircle   = 1/2(∏)(17)   = 1/2(22/7)(17) = 374/14 = 26.71 cm to two decimal places   ANSWER:26.71 cm
<result>C</result>
The parameter of a square is equal to the perimeter of a rectangle of length 20 cm and breadth 14 cm. Find the circumference of a semicircle whose diameter is equal to the side of the square. (Round off your answer to two decimal places)