Which are ways to decompose the composite figure into simpler shapes that you have area formulas for? Check all that apply.

1) separate the figure into simpler shapes whose area can be found. Then add the areas together.

2. Add smaller shapes to the composite figure that equal a larger shape to save time. Here it is useful as it also helps you find quicker measurements for opposite lines. So always look for opposite lines when considering adding a viable shape. Such shape needs to have the same equal measurement as another that cna be dotted lines and found quickly too.

3. Remember formulas.

Area Triangle  = B x H /2

Area Parallelogram = B x H

Area Square rectangle =  L x W  

Area Semi Circle = pi * r^2/2

Area Sector Circle  =  θ × π 360 × r2 (when θ is in degrees)

Area of Segment = ( θ × π 360 − sin(θ)2 ) × r2 (when θ is in degrees)

Length of a circle = L = θ × π180 × r (when θ is in degrees)

The Area of a Segment is the area of a sector minus the triangular piece usually highlighted and so you add this to equal 360 degree.

12cm

the answer is d

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol