Find area of figures

The figure A is a rectangle and The figure B is a right angle triangles. Let's find their areas and add them to find total area

Thus, Area of Figure A is 224cm²...

Where B is base and H is height

Step-by-step explanation:

Area for B

For total area

Area of A + Area of B

=224cm²+96cm²

=320cm²

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: