Question

Help me llliad plz neeeeeeed help

Answer 1

Lets get started :)

Diameter = 2.5 ft
Radius = $\frac{diameter}{2} = \frac{2.5}{2} = 1.25$

a) The Circumference formula of a circle is given in the picture below, we can plug-in the given information

C = 2$\pi$(1.25) or 2.5$\pi$
    ≈ 7.85 ft 
(we can leave the answer in terms of pi {$\pi$})

b) We divide the total number of distance the tire will travel by the circumference to find how many times the tire will roll

$\frac{5280}{circumference} = \frac{5280}{2.5 \pi }$ 
(I have used the value in feet because we found the circumference in feet units and notice that I took the value of circumference to be 2.5$\pi$ instead of 7.85, to increase accuracy)

672.2

The tire will rotate 672 times (a tire cannot roll a decimal times, so we take to the nearest whole number) to travel 1 mile