Understandable- have a good day
Answer to a : 30-19=x but for b i’m not that smart
Hello!
To find the area of a trapezoid you use the equation

Put in the values you know

Add

Divide

Divide both sides by 26
15 = h
The answer is 15km
Hope this helps!
It is given that the triangle is isosceles right triangle . And in an isosceles right triangle the legs are equal . Let each leg be of x units. Now we use pythagorean identity, which is





So the length of each leg is 