Question

The circumference of a circle is 154cm.find its diameter​

Answer 1

I think it is 49cm , is it ?

Answer 2

Answer:

$2\pi r = 154 \\ 2 \times \frac{22}{7} \times r = 154 \\ \frac{44}{7} \times r = 154 \\ 44 \times r = 154 \times 7 \\ r = \frac{1008}{44 } = 22.9090909 \\ d = 45.8181818$