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Sagot :
Answer:
8. P = 48 cm A = 83
9. P =32 cm A = 60
Step-by-step explanation:
P = add all sides together
A = base times height
Answer:
8. P = 48 cm, A = 83 cm²
9. P = 36 cm, A = 56 cm²
Step-by-step explanation:
The trick with irregular shaped objects areas is to split them up into several rectangles. Perimeters is just filling in the missing sides using the other sides and adding them all up.
After finding the missing sides for the first figure, the perimeter would be:
5 + 10 + 4 + 3 + 11 + 3 + 2 + 10 = 48 cm
For the area, we split the figure into the vertical rectangle on top and the horizontal rectangle on the bottom. You'll see that the vertical rectangle has an area of 50 squared cm (5 * 10), while the area of the other rectangle is 33 squared cm (3 * 11), so the area of the whole figure is 50 + 33 = 83 squared cm.
Use this same method for the next figure, and you should get that the perimeter is 36 cm and the area is 56 squared cm.
Hope this helps
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