Question

Calculate the AREA of an EQUILATERAL triangle, whose HEIGHT is 20 cm.​

Answer 1

Answer:

173.2 or 100$\sqrt{3}$

Step-by-step explanation:

area of equilateral triangle =

$\sqrt{3}$/4$Side^{2}$=

$\sqrt{3}$/4*20*20=

173.2 or 100$\sqrt{3}$

Answer 2

Step-by-step explanation:

$area \: of \: an \: equilaterql \: triangle = \: \frac{ \sqrt{3} }{4 } a {}^{2}$

$given \: height = 20 \: cm$

$area \: of \: an \: equilateral \: triangle \\ \: with \: height \: is$

$\frac{h {}^{2} }{ \sqrt{3} }$

$now \: area \: of \: equilateral \: triangle = \: \frac{20 {}^{2} }{ \sqrt{3} }$

$\frac{400}{ \sqrt{3} } \times \frac{ \sqrt{3} }{ \sqrt{3} }$

$\frac{400 \sqrt{3} }{3} sq \: cm$

$thakyou$

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