Home » Past Questions » Mathematics » Calculate the area of an equilateral triangle of side 8cm

Calculate the area of an equilateral triangle of side 8cm


Question

Calculate the area of an equilateral triangle of side 8cm

Options

A) 8√3

B) 16

C) 4√3

D) 16√3

The correct answer is D.

Explanation:

An equilateral triangle has all sides equal and all angles equal as 600
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\(^2\)


More Past Questions:


Dicussion (1)

  • An equilateral triangle has all sides equal and all angles equal as 600
    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\(^2\)

    Reply
    Like