Find the area of the irregular figure

The figure can be separate into a triangle, a rectangle and a trapezium.

Triangle:

Area = 1/2 x base x height

Area = 1/2 x 16 x (25 - 4) = 168 units²

Rectangle:

Area = length x Width

Area = 16 x 4 = 64 units²

Trapezium:

Area = 1/2 (a + b) x h

Area = 1/2 (25 + 15) (10) = 200 units²

Total Area = 200 + 64 + 168 = 432 units²

432 units²

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

understand that i don't know the answers

will someone answer his question