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the perimeter of an isosceles triangle is 32 cm. the ratio of the equal side to itsbase is 3 : 2. find the area of the triangle

User Hdort
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1 Answer

3 votes

Answer:

..1) on calcule les longueurs des côtés

somme des ratios : 5

base =3/5*32 = 19,2cm

les 2 côtes sont égaux (triangle isocele) longeur d'un côté

(2/5*32)/2=6,4cm

2) aire triangle =(base*h)/2

voir image

la hauteur AI on l'a calcule

elle forme un triangle rectangle AIC

AI²= (19,2/2)²-6,4²

AI²= 92,16-40,96

AI=√51,2≈7,15cm

Aire triangle = (19,2*7,15)/2=68,64cm²

Explanation:

the perimeter of an isosceles triangle is 32 cm. the ratio of the equal side to itsbase-example-1
User JohnRC
by
7.8k points
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