What is the height of an equilateral triangle with sides that are 12 cm long? Round to the nearest tenth.
a. 6 cm
b. 10.4 cm
c. 8.5 cm
d. 6.9 cm
The formula for the height of an equilateral triangle is h = (√3/2) x s, where s is the length of any side of the triangle.
Substituting s=12 into the formula we get:
h = (√3/2) x 12
h = 6√3
Rounding to the nearest tenth, we get:
h ≈ 10.4 cm
Therefore, the answer is (b) 10.4 cm.
impatient much?
Once is enough, thank you.
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