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# Calculate the area of an equilateral triangle of side 8cm

### Question

Calculate the area of an equilateral triangle of side 8cm

A) 8√3

B) 16

C) 4√3

D) 16√3

### 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$$^2$$

## 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$$^2$$