i need help for 7 problems

Answer:
[tex]180 {m}^{2} [/tex]
Step-by-step explanation:
The area of a trapezoid is given by:
[tex]Area = \frac{1}{2} (sum \: of \: bases) \times h[/tex]
From the diagram, the bases are 17m 23m, and the the height is 12m.
We substitute the values into the formula to get:
[tex]Area = \frac{1}{2} (17 + 13) \times 12[/tex]
[tex]Area = \frac{1}{2} \times 30 \times 12[/tex]
[tex]Area = 6 \times 30[/tex]
This implies that
[tex]Area = 180 {m}^{2} [/tex]