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In an equilateral triangle STU, inradius is $5\sqrt{3} cm$. What is the length of side this equilateral triangle ? |
$20\sqrt{3}cm$ $18\sqrt{3}cm$ 30 cm 24 cm |
30 cm |
We know that, The inradius of the equilateral triangle = \(\frac{side}{2\sqrt {3}}\) $5\sqrt{3}$ = \(\frac{side}{2\sqrt {3}}\) side = $5\sqrt{3}$ × $2\sqrt {3}$ = 30 cm |
