Question 19
Mensuration of Plane ShapesA wire is bent to form a square of side 22 cm. If the wire is re-bent to form a circle, find the radius [Take π = 22/7]
- A.7 cm
- B.14 cm
- C.77 cm
- D.22 cm
Show the answer and explanation
Answer: B (14 cm)
Explanation
Wire length = 4 × 22 = 88 cm = 2πr, so r = 88 × 7 ÷ 44 = 14 cm.