The parameter 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) Answers:
A) 77.14 cm	B) 25.14 cm	C) 84.92 cm	D) 94.94 cm	E) 23.57 cm
Let the side of the square be a cm.   Parameter of the rectangle = 2(18 + 14) = 64 cm Parameter of the square = 64 cm   i.e. 4a = 64   A = 16   Diameter of the semicircle = 16 cm   Circimference of the semicircle   = 1/2(∏)(16)   = 1/2(22/7)(16) = 352/14 = 25.14 cm to two decimal places   ANSWER:25.14 cm
<result>B</result>
The parameter 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)