Question 8 (2 points) what is the circumference of the circle? 140 i ft 280 t ft 4900 ft 19600 ft

The circumference of a circle is found by multiplying the diameter by PI.

Since the answer are in the form of PI, the answer is 140π ft.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: