Final answer:
To find the radius of the dirt ring with a given area of 171.9464 square yards, we use the formula for the area of a circle and solve for the radius, arriving at an estimated radius of about 7.39 yards, corresponding to option D.
Step-by-step explanation:
The question asks for the radius of a dirt ring used for bronco riding at a rodeo, given its area in square yards. Since the area is likely that of a circle, we'll use the formula for the area of a circle, A = πr^2, where A is the area and r is the radius. The provided area is 171.9464 square yards.
To find the radius, we rearrange the formula to solve for r, obtaining r = √(A/π). Now we'll plug the area into the equation:
- Area (A) = 171.9464
- π (pi) is approximately 3.14159265359
- r = √(171.9464 / 3.14159265359)
- r ≈ √(54.7334)
- r ≈ 7.39 yards
Thus, the radius of the ring is approximately 7.39 yards, which corresponds to option D.