Instead of walking along two adjacent sides of a rectangular field, a boy took a short cut along the diagonal of the field and saved a distance equal to half the longer side. The ratio of the shorter side of the rectangle to the longer side is
Step-by-step Solution:
This problem can be solved by setting up an algebraic equation based on the Pythagorean theorem and the information about the "distance saved".
The problem states that this saved distance is equal to half the longer side. This gives us our main equation:
(l + s) - √(l² + s²) = l / 2
- First, we rearrange the equation to isolate the square root term on one side:
l + s - l/2 = √(l² + s²)
l/2 + s = √(l² + s²)
- Next, we square both sides of the equation to eliminate the square root:
(l/2 + s)² = l² + s²
(l²/4) + (2 × l/2 × s) + s² = l² + s²
l²/4 + ls + s² = l² + s²
- The s² terms cancel out on both sides, leaving:
l²/4 + ls = l²
- Now, we solve for the relationship between l and s:
ls = l² - l²/4
ls = (3/4)l²
- Finally, to find the required ratio, we divide both sides by l²:
s/l = 3/4
Final Answer: The ratio of the shorter side of the rectangle to the longer side is 3/4.