A street sign company is making street signs in the shape of equilateral triangles. The side length of each sign is 22 inches. W
hat is the exact altitude length so that the company will be able to know what size box to ship them in?
1 answer:
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Answer:
9
Step-by-step explanation:
w+13-=16
w · -
+13=16
+13=16
=3
w=9