Question

find the area of triangle ​

Answer 1

Answer:

√3/4*20*20

100√3 is the area

Answer 2

$\setlength{\unitlength}{1 cm}\begin{picture}(20,15)\thicklines\qbezier(1,1)(1,1)(3.5,4)\qbezier(1,1)(1,1)(5.5,1)\qbezier(5.5,1)(5.5,1)(3.5,4)\put(1,2.5){\large\sf 20 cm}\put(4.8,2.5){\large\sf 20 cm}\put(2.8,0.5){\large\sf 20 cm}\end{picture}$

Question :-

☆ Find the area of triangle

Given :-

☆ Side (a) = 20 cm

Formula :-

$Area \: of \: equilateral \: triangle = \frac{ \sqrt{3} }{4} {a}^{2}$

Solution :-

$Area = \frac{ \sqrt{3} }{4} {a}^{2}$

Put value of a (side)

$Area = \frac{ \sqrt{3} }{4} \: {20}^{2}$

$Area \: = \frac{ \sqrt{3} }{4} \: 400$

$Area = \frac{ \sqrt{3} }{ 4} \: 400$

$Area \: \sqrt{3} \times 100$

$Area = 100 \: \sqrt{3} \: {cm}^{2}$