Math Project

Aerical Picture B of the Old Spill

1) Rectangle

2.5 cm x 15 m = 37.5 m

7 cm x 15 m = 105 m

37.5 m + 105 m = 142.5 m2

2) Rectangle

3 cm x 15 m = 45 m

2.9 cm x 15 m = 43.5 m

45 m + 43.5 m = 88.5 m2

3) Triangle

2.5 cm x 15 m = 37.5 m

4.9 cm x 15 m = 73.5 m

37.5 m + 73.5 m = 111 m

111 m / 2 = 55.5 m2

4) Rectangle

7.4 cm x 15 m = 111 m

2.2 cm x 15 m = 33 m

111 m + 33 m = 144 m2

5) Triangle

2.2 cm x 15 m = 33 m

3.5 cm x 15 m = 52.5 m

33 m + 52.5 m = 85.5 m

85.5 m / 2 = 42.75 m2

6) Rectangle

3.5 cm x 15 m = 52.5 m

3.2 cm x 15 m = 48 m

52.5 m + 48 m = 100.5 m2

7) Rectangle

1 cm  15 m = 15 m

3.5 cm x 15 m = 52.5 m

15 m + 52.5 m = 64.5 m2

8) Triangle

3.5 cm x 15 m = 52.5 m

3 cm x 15 m = 45 m

52.5 m + 45 m = 97.5 m

97.5 m / 2 = 48.75 m2

9) Triangle

2.5 cm x 15 m = 35.5 m

3 cm x 15 m = 45 m

35.5 m + 45 m = 80.5 m

80.5 m / 2 = 40.25 m2

10) Rectangle

4.5 cm x 15 m = 67.5 m

2 cm x 15 m = 30 m

67.5 m + 30 m = 97.5 m2

Total

142.5 m2 + 88.5 m2 + 55.5 m2 + 144 m2 + 42.75 m2 + 100.5 m2 + 64.5 m2 + 48.75 m2 + 40.25 m2 + 97.5 m2 = 824.74 m2

Taking a second look at your sectioned polygons from your map, do you think your area is an exact measure of the space affected by the spill?

  • I do think all of my areas is exact same. I think this because I measured all each shape by length and width. Then I Multiplied length x 15 miles for all of the shapes and do the same to Width x 15 miles for all of the shapes. If you have a triangle shape you in to do length x 15 miles and width x 15 miles, then you add them up to get the total, and then you divide the total divide by 2, and finally you get your answer of the triangle. This is why I do think all of my areas is exact same.

How accurate do you think your polygons compare to the actual spill area? Do you expect your answer to be more or less than the actual spill area?

  • I thought it would be less than the actual spill area. I thought its was less because I have less shape. Also I thought its was less by its looks on the Oil Spill Maps.