To solve this problem, we are required to write and expression to solve for the missing side in each figure.
Side of a Square
To find the missing side of the square, we can simply write it as
[tex]15 = h + x\\x = (15 - h)m[/tex]
For the triangle, to find the missing side let's calculate the area of the triangle
[tex]area = \frac{1}{2} base * height\\area = \frac{1}{2} * 5 * 12\\area = 30m^2[/tex]
But for the length of the missing side, we can simply write it as
[tex]b = 10 + x\\x = (b - 10)m[/tex]
The expressions for the missing sides are;
- x = (15- h)m
- x = (b - 10)m
Learn more on area of a square and triangle here;
https://brainly.com/question/14295280
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