Question

find the area of an equilateral triangle each of whose side is a unit

Answer 1

Answer:

From the fig. i drawed, we can calculate a as

$a \: = \: {1}^{2} - {0.5}^{2} \\ a = 1 - 0.25$

a = 0.75

Now, area of traingle is

Ar. = (1/2)×1×0.75 => {1/2 × base × height}

Ar. = 0.375

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