Question

In a equilateral triangle of side 3√3 cm, find the length of the altitude.

Answer 1

Length of altitude = root3 a/2

=root3(3root3)/2

=9/2

=4.5

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Answer 2

(3√3)² =h²+(3√3/2)²

• 27=h²+27/4

• h²=27-27/4

• h²=81/4

• h=9/2=4.5.