Answer: 5 units^2
Explanation:
You can deduce that the height of the triangle is 5. You use the pythagoreon theorem to find the missing distance. 5^2+x^2=7^2
X=sqrt24.
Using that info you find the area of the missing triangle. Getting 2.5sqrt24. Find the area of the combined triangles, (5*(2+sqrt25))/2.
you should get 5+2.5sqrt24. Then subtract the missing triangle to get 5.