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egoroff_w [7]
3 years ago
13

Need help with this problem explain pls

Mathematics
1 answer:
Usimov [2.4K]3 years ago
6 0
All sides of an equilateral triangle are equal, so all three sides are 9 cm.
To find h, use the pythagorean theorem. This requires use of only one right triangle, where we use b as our h.

a^2+b^2=c^2
(4.5)^2+b^2=(9)^2
(20.25)+b^2=(81)
b^2=(81/20.25) or 4
square root both sides
b=2
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