Question on: JAMB Mathematics - 2018
Calculate the area of an equilateral triangle of side 8cm
A
8√3
B
16
C
4√3
D
16√3
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Correct Option: D
An equilateral triangle has all sides equal and of the angles equal as 60 degrees each
 Area = \(\frac{1}{2}\) absinθ
 Area = \(\frac{1}{2}\) x 8 x 8 x sin60
 = \(\frac{1}{2}\) x 64 x \(\sqrt{\frac{3}{2}}\)
 = 16√3 cm\(^2\)
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