Answer:
1. 72m
2. 15cm
3. 80m
SOLUTION:
1. octagon = 8 sides
perimeter = sum of all sides
therefore, 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 72m
2. length + width
10cm + 5cm = 15cm
3. decagon = 10 sides
therefore, 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 = 80m
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Answers & Comments
Answer:
1. 72m
2. 15cm
3. 80m
SOLUTION:
1. octagon = 8 sides
perimeter = sum of all sides
therefore, 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 72m
2. length + width
10cm + 5cm = 15cm
3. decagon = 10 sides
therefore, 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 = 80m