To the nearest tenth, how many times greater is the circumference of the full size car's tire when compared to the circumference of the miniature car's tire?

Answer 1

To calculate the circumference of a circle, we use the formula:

Circumference = 2πr

where r is the radius of the circle.

Let's assume the radius of the full-size car's tire is R, and the radius of the miniature car's tire is r.

Thus, the circumference of the full-size car's tire is:
C1 = 2πR

And the circumference of the miniature car's tire is:
C2 = 2πr

To find how many times greater the circumference of the full-size car's tire is compared to the circumference of the miniature car's tire, we divide C1 by C2:

C1/C2 = (2πR) / (2πr)

The π values cancel out, leaving us with:

C1/C2 = R/r

So, the circumference of the full size car's tire is R/r times greater than the circumference of the miniature car's tire.