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ioda
4 years ago
14

Find the area of shape 1 and shape 2

Mathematics
1 answer:
kirza4 [7]4 years ago
7 0
You can use Pick's theorem, where:

Area = Number of interior points (points inside the polygon) + \dfrac{1}{2} · Number of boundary points (points on the polygon's perimeter) - 1

so:

1.Yellow:

Interior points = 3
Boundary points = 8

A=3+\dfrac{1}{2}\cdot8-1=3+4-1=\boxed{6\text{ units}}

2. Red:

Interior points = 2
Boundary points = 10

A=2+\dfrac{1}{2}\cdot10-1=2+5-1=\boxed{6\text{ units}}
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