The parameter of a square is equal to the perimeter of a rectangle of length 7.5cm and breadth 6.5 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 answers:	A) 10.2	B) 10.27	C) 10.23	D) 10.21	E) 10.25
Let the side of the square be a cm.   Parameter of the rectangle = 2(7.5+ 5.5) = 26 cm Parameter of the square = 26 cm   i.e. 4a = 26   a = 6.5   10.21iameter of the semicircle = 6.5 cm   Circimference of the semicircle   = 1/2(âˆ)(6.5)   = 1/2(22/7)(6.5) = 143/14 = 10.21 cm to two decimal places   Answer: 10.21
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The parameter of a square is equal to the perimeter of a rectangle of length 7.5cm and breadth 6.5 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)?