The circumference of a circle is 88 cm, find its area?
1). 616 sq cm
2). 308 sq cm
3). 154 sq cm
4). 77 sq cm
Solution:
Given : Circumference of the circle = 88 cm
That is, 2πr = 88 cm
2 × (22/7) × r = 88
r = (88 × 7)/ 2 × 22
r = (88 × 7)/ 44
r = 2 × 7
r = 14 cm
So, Area of the circle = πr² sq.units
= (22/7)(14)² cm²
= 22 × 2 × 14 cm²
= 616 cm²
So, the correct option is 1). 616 sq.cm.