First I marked this as ABCD triangle for the easy access.
Then ABC triangle was considered and according to the pythagorus relationship X was found.
Then according to the ACD triangle, and ABD triangles the following equations were taken.
According to the 3rd photo the answer is taken
The answer is 320,000,000.
Given:
The longer sides of a rectangular garden = 15 feet
It were 3 times longer than the shorter sides.
To find:
The total distance covered by Zack if he walked all the way around the garden.
Solution:
Let the shorter side be x.
Longer side = 15 feet
According to given equation, longer side is 3 times longer than the shorter sides.
Divide both sides by 3.
So, the measure of shorter side is 5 feet.
The total distance covered by Zack if he walked all the way around the garden is the perimeter of the garden.
Perimeter of rectangular garden is
Therefore, the total distance covered by Zack is 40 feet.
Multiply the left side by 63....does that help?