The perimeter of an equilateral triangle is 26 centimeters. find the altitude of the triangle

We have P = 3 x a (the formula of the perimeter); 26 = 3 x a ; we obtain a = 26/3;

Then, we have  the Pythagorean Theorem in one of two rectangular and congruent triangles :

h² = a² - (a/2)² = a² - a²/4 = 4a²/4 - a²/4 = 3a²/4

It follows that

h = √(3a²/4) = a√3/2 ≈ 0,866*a ≈ 7,5 centimeter.

the answer is 3/5

step-by-step explanation:

first divide 24 divided by 8 because that is the least common multiple

then divide 40 by 8

then you will get 3/5.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm