Question

The length of side an equilateral is 10cm then find this area

Answer 1

Answer:

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Step-by-step explanation:

Formula: Are of an equilateral triangle having side length a is given by,  

root 3/4 a^2

Here it is given that, side length ,a=10 cm

Thus its area =   root 3/4 a^2 * 10^2 cm ^ 2  = 25 root3 cm ^2

Answer 2

$\sf \huge \underline{given \ \: : }$

$\bull \bf \: side \: of \: the \: eqilateral \\ \bf \: triangle \: is \: 10 \: cm. \: \: \: \: \: \: \: \: \: \: \:$

$\huge \sf \underline{ \: to \: find \ \: : }$

$\bf \bull \: area \: of \: the \: triangle$

$\huge \sf \underline{solution \ \: : }$

$\sf \underline{as \: we \: know \: that \ \: : }$

$\sf \: area \: of \: eqilateral \: triangle \ \: :$

$\sf\frac{ \sqrt{3} ({side})^{2} }{4}$

$\sf \underline{let \: us \: solve \ \: : }$

$\sf \to \frac{ \sqrt{3} ({10})^{2} }{4}$

$\sf \to \frac{ \sqrt{3} (100)}{4}$

$\sf \to \sqrt{3} \times 25$

$\red{ \fbox{ = 43.3 \: \: c.m}}$

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