The area of a rectangle is 45 ft2. if the length of the long side of the rectangle is 80% greater than the short side of the rectangle, what is the length of the longer side?

To solve this problem we propose the following equation:

1)  This is the equation of the area of a rectangle.

Where a and b are the sides of the rectangle

If b is the longest side, then

b is 80% longer than h.

2)

Now we have 2 equations and two unknowns.

Therefore we solve the following equations

b = 9 feet

The length of the longest side is 9 feet.

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step-by-step explanation: