The parameter of a square is equal to the perimeter of a rectangle of length 8 cm and breadth 6 cm. Find the circumference of a semicircle whose diameter is equal to the side of the square.
Pick:
A) 23.56 B) 23.59 C) 23.55 D) 23.53 E) 11.0

Rationale: "let the side of the square be a cm . parameter of the rectangle = 2 ( 8 + 6 ) = 28 cm parameter of the square = 28 cm i . e . 4 a = 28 a = 7 diameter of the semicircle = 7 cm circimference of the semicircle = 1 / 2 ( â ˆ  ) 7 = 1 / 2 ( 22 / 7 ) ( 7 ) = 11 cm answer : e"
Answer: E