Need help with math plz

see below

Step-by-step explanation:

1). 8 radii are shown, there are 8 straight lines going from the center of the circle to the edge of the circle

2) diameter = d, radius = r. given radius r ,

d = 2r

d = 2(14.5) = 29

the diameter is 29 cm

3)using d = 2r

7x+5 = 2(13) = 26

7x = 21

x = 3

4)the length of the diameter is increased 3 times

d1 = 2r,

d2 = 2(3r) = 6r

we see that the diameter whose radius is 3 times longer is 3 times larger than the diameter whose radius is 1 times as long.

5) they can find the diameter of the circular path, then find the radius, go from one point on the circular path and go r distance

7

step-by-step explanation:

d is the correct answer

step-by-step explanation:

x= 8 because 3x = 3 * 8, and 3*8 = 24