Triangle eq

Calculate accurate to hundredths cm height of an equilateral triangle with a side length 12 cm. Calculate also its perimeter and content area.

Correct result:

h =  10.39 cm
o =  36 cm
S =  62.35 cm2

Solution:

h=122−(12/2)2=10.39 cm
o=3⋅ 12=36 cm
S=12⋅ 122−(12/2)2/2=62.35 cm2

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