Answer:
the requirements are missing:
- express the height of the rectangle in terms of w
- express the area of the rectangle in terms of w
1) the height of the rectangle is:
w + h + h + w = 500 + w
2w + 2h = 500 + w
2h = 500 + w - 2w = 500 - w
h = (500 - w) / 2 = 250 - 0.5w
2) the are of the rectangle is:
w x h = w x (250 - 0.5w) = 250w - 0.5w²
Answer:

Step By Step Explanation:
Area Of Triangle: 
Base: 10
Height: 24 (This triangle has a right angle, so we use the height based off of the 90° angle, which is 24)
Insert Numbers Into Equation

10 = 5

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A heart, square, triangle, rectangle, diamond, basically most shapes...
Answer: 56.52
Step-by-step explanation: