Question

@DanJS

Answer 1

It is a rectangle and a triangle

Answer 2

so from 0 to 5 the area is 5*5 = 25

Answer 3

then from 5 to 10 it is the area of the triangle

Answer 4

So the area is the area of the rectangle = 25 plus the area of the triangle = 0.5*25

Answer 5

75/2 or 37.5

Answer 6

You can check by taking the integral of (10-x) from 5 to 10 and adding that to 25(the area of the box)