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Area shaded region of the triangle ABC is 80 sq. units, what is the area of triangle ABC?

 

 Dec 27, 2019
 #1
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let the last vertex of the shaded triangle be y

Triangle BYC area= 1/2bh (General formula) 

1/2(2n)*h=80

2n*h=160

2nh=160

nh=80

Consider triangle ABC

area=1/2(3n)*h

1/2*3nh

we know nh=80

1/2*3(80)=120

so triangle ABC area=120

Also triangle ABY=120-80=40 

 Dec 27, 2019
 #2
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Area shaded region of the triangle ABC is 80 sq. units, what is the area of triangle ABC?

laugh

 Dec 27, 2019

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