A circular logo of radius 14 cm is fitted perfectly inside a square plaque. Find the area of unused square space around the circle.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 168 cm2.
Radius = 14 cm
Diameter = 28 cm
⇒ side of square = 28 cm
Area of square = 282 = 784
Area of circle = πr2
⇒ × 142 = × 196 = 616 cm2
Unused area = 784 − 616 = 168 cm2