Answer:
12.5 inches
Step-by-step explanation:
To find the length of the diagonal of a rectangle, you can use the Pythagorean theorem, which states that in a right-angled triangle, the square of the length of the hypotenuse (diagonal) is equal to the sum of the squares of the other two sides.
C² = 10² + 7.5²
C² = 100 + 56.25
C² = 156.25
C = 12.5 inches
So, the length of the rectangle's diagonal is 12.5 inches.