If you think about it, an octagon is made up of 8 triangles. So you first find the area of one triangle then multiply it by 8 for the total area:
A=1/2bh
A=1/2(9.9)(12)
A=59.4
59.4 x 8= 475.2
Therefore the total area for the octagon should be 475.2 units^2
Hope this helps !
In standard form, it would look like this:
4125 * 1000
This would be 4,125,000
17/33 in lowest terms<span>
17/33 is in lowest terms. It cant be divided any farther.
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Answer:

Step-by-step explanation:


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answer:
Answer:
100inches
Step-by-step explanation:
50books
each book is 2 inches
50books x 2 inches per boo = 100inches