If r is the radius of a circle such that πr2= 2πr, what is the diameter of the circle?
πr2 = 2πr
r = 2 units
So, diameter
2r = 4 units
Tick the correct answer in the following:
Area of a sector of angle p (in degrees) of a circle with radius R is
(A) , (B) , (C) , (D)