Lisa has to cut her grandma's grass this weekend and wants to know exactly how much area she will be cutting. Calculate the area of the polygon. Be sure to show all your work and explain your answer.

398

Step-by-step explanation: First I find the area of the biggest triangle 20x20x1/2=200.

Then I find the area of the rectangle by cutting off the triangle at the end 6x30=180.

After that I find the area of the small triangle 6x6x1/2=18.

Finally, I add all the area up and 18+180+200= 398

Hope this helps :)

  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.