The diagram shows a track composed of a rectangle with a semicircle on
each end. The area of the rectangle is 3,600 square meters. What is the
perimeter of the track? Use 3.14 for 1.
The perimeter of the track is
(Round to the nearest tenth as needed.)

4856m²

Step-by-step explanation:

3600 / 90 = 40

diameter of the two circles = 40

area of a circle = πr²

radius = 40/2 = 20

20*20 = 400 / 3.14 = 1256

the 2 semicircles = 1 whole circle, no need to divide by 2

3600 + 1256 = 4856m²

the amount you'd have after the work is $1.55

step-by-step explanation:

you subtract 95% from $31.

b.an increase in a causes b to decrease