The parameter of a square is equal to the perimeter of a rectangle of length 22 cm and breadth 20 cm. Find the circumference of a semicircle whose diameter is equal to the side of the square.	Choose the correct answer
A) 23.56	B) 33.0	C) 23.55	D) 23.53	E) 23.57
Let the side of the square be a cm.   Parameter of the rectangle = 2(22 + 20) = 84 cm Parameter of the square = 84 cm   i.e. 4a = 84   A = 21   Diameter of the semicircle = 21 cm   Circimference of the semicircle   = 1/2(âˆ)21   = 1/2(22/7)(21) = 66/2= 
<gadget id="calculator">66/2</gadget>
<output>33</output>
33 cm   Answer:33.0
<result>B</result>
The parameter of a square is equal to the perimeter of a rectangle of length 22 cm and breadth 20 cm. Find the circumference of a semicircle whose diameter is equal to the side of the square.