The perimeter of a square is equal to the perimeter of a rectangle of length 18 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 one:  A) 23.57  B) 23.54  C) 23.5  D) 24.55  E) 25.14
Let the side of the square be a cm.   Perimeter of the rectangle = 2(18 + 14) = 64 cm   Perimeter of the square = 64cm   i.e. 4a = 64   A = 16   Diameter of the semicircle = 16 cm   Circumference of the semicircle   = 1/2(∏)(16)   = 1/2(22/7)(16) = 25.14 cm to two decimal places   Answer: 25.14
<result>E</result>
The perimeter of a square is equal to the perimeter of a rectangle of length 18 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)