a. The distance around the park to the nearest yard is equal to 191 yards.
b. Since a new path and a bridge are constructed from point Q to the midpoint M of PR, the length of QM is 40 yards.
Part a.
In Mathematics and Geometry, Pythagorean theorem is an Euclidean postulate that can be modeled or represented by the following mathematical equation:
Where:
- a is the opposite side of a right-angled triangle.
- b is the adjacent side of a right-angled triangle.
- c is the hypotenuse of a right-angled triangle.
In order to determine the distance around the park, we would have to apply Pythagorean's theorem as follows;
PR = 80.6226 ≈ 81 yards.
Total distance (perimeter of triangle PQR) = PQ + QR + PR
Total distance (perimeter of triangle PQR) = 40 + 70 + 81
Total distance (perimeter of triangle PQR) = 191 yards.
Part b.
Since triangle PQR is a right-angled triangle and based on the definition of a midpoint, we have;
QM = 1/2 × PR
QM = 1/2 × 80.6226
QM = 40.3113 ≈ 40 yards.