Exercise 9

giúp minh vs ạ
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9
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Exercise 9. (ASMO) As shown in the diagram below,
what is the perimeter of the shaded area?
Exercise 10. (IKMC)
The diagram is constituted of few rectangular
shapes overlapping each other. If the unit is in
square
meter, the area of the diagram is
meters.
50cm
unit: meter
16
12
40
90cm
48
8
|
20
20
12
20