Answer:
12 inches
Step-by-step explanation:
The circumference of a circle can be found using the following formula.
c= 2πr
We know that the circumference is 75 inches and we are using 3.14 for pi. Therefore, we can substitute 75 in for c and 3.14 for pi.
75= (2*3.14) r
Multiply 2 and 3.14
75= 6.28* r
We want to find r, or the radius. Therefore, we must get r by itself.
r is being multiplied by 6.28. The inverse of multiplication is division. Divide both sides by 6.28.
75/6.28= 6.28*r/6.28
75/6.28=r
11.9426752=r
Round to the nearest inch. The 9 in the tenth place tells us to round 11 up to a 12.
12= r
r= 12 inches
The approximate length of the radius is 12 inches.
