Question

the circumference of a circle is 125.6 cm.Find its radius and diameter with example​

Answer 1

Answer:

radius is 20 and dimeter 40

Step-by-step explanation:

125.6=2pi r

Answer 2

Answer:

Circumference = 2πr

                         = (2x3.14) x r

r = radius

Circumference = 125.6cm

2πr = 125.6

(2x3.14) x r = 125.6

6.28 x r = 125.6

r = $\frac{125.6}{6.28}$

(make denominator whole number)

$\frac{125.6}{6.28}$ × $\frac{100}{100}$ = $\frac{12560}{628}$

r =  $\frac{12560}{628}$

 = 20cm

diameter = 2xradius

d = 2x20

  = 40cm