Because this triangle and trapezoid are reflections of each other when split in half, remove the highlighted parts to make them a rectangle. When made into a rectangle, you can use the formula length * width to find the area of either shape (trapezoid or triangle).
Note you won't be able to do this when solving for the area of ALL trapezoids and triangles.
6x7=42cm squared Base x height = triangle area 10+18=28/2=14 14x5=70cm squared Add the parallel line together and divide that number by 2 then times that number by the height.
