The radius of a circle if its perimeter and area are numerically equal is
8 units
5 units
2 units
4 units
Tick the correct answer in the following and justify your choice: If the perimeter and the area of a circle are numerically equal, then the radius of the circle is
(A) 2 units (B) π units (C) 4 units (D)7 units
If the vomume and the surface area of a sphere are numerically the same then its radius is(a) 1 unit (b) 2 units (c) 3 units (d) 4 units