<PRE><B>Question 17499</B>
We can use the formula for Area of an equilateral triangle to find the side length.
Area = s^2{{{sqrt(3)}}}/4
30 = s^2{{{sqrt(3)}}}/4
120 = s^2{{{sqrt(3)}}}
69.28 = s^2
8.23 cm = s
the altitude h of an equilateral triangle is :
h = side * sin 60 degrees.
8.23 (0.866) = 7.13 cm
To check,
1/2(8.23 * 7.13) = 29.3 Approx 30.
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