#### Answer

radius = 25 m
diameter = 50 m

#### Work Step by Step

The circumference of the circle = 157 m
The circumference of the circle is given by the formula
c= $\pi$ d = 2$\pi$ r
therefore 2$\pi$ r = 157
2*3.14*r = 157
r = $\frac{157}{3.14* 2}$ = 25 m
Therefore diameter of the circle = 2r = 2* 25 = 50 m