Question

The circumference of a circle exceeds its diameter by 16.8 cm. Find the circumfrence of the circle.

Answer 1

πD - D = 16.8
22/7 D - D = 16.8
   15/7 D = 16.8
           D = 7.84

Circumference = πD = 22/7  X 7.84
                           = 24.64 cm²