Answers

2015-01-09T19:21:08+05:30
Radius = Diameter/2 = 9/2 = 4.5 cm
Area = πr² = 3.14 * 4.5 * 4.5 = 63.585 cm²
0
2015-01-09T19:37:11+05:30
Area of a circle of circle = πr² 
Diameter of a circle(d) = 2 (radius) = 2r =9 cm
r = 9/2 = 4.5 cm
Area = π(4.5)² = 3.14×20.25 = 63.6850 cm²

Note: - Here the perimeter of the circle will be 2πr = 2×3.14×4.5 = 28.26 cm,

0