Hello,
x²-64=(x+8)(x-8)
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Height = 12 cm
Base/width —> half of height —> 12/2 = 6 cm
Area = length x width
Area —> 12x6 = 72
The sticker covers 72 cm of the notebook.
Answer:
1. Use a straightedge
2. Draw dots on the line to mark the starting point
3. Place the point of the compass on the point you made or was given
4. Extend the compass so that the pencil is on the 2nd point & make a an arc thru point B
5. Place the compass point on the starting point dot on the line and draw w/ the pencil to create an arc crossing the line.
