PLEASE HELP I REALLY NEED HELP.

Each of the three circles in the figure below is externally tangent to the other two, and each side of the triangle is tangent to two of the circles. If each circle has radius three, then find the perimeter of the triangle.

The figure is basically an equaliteral triangle. Inside there are three circles of the same size and are congruent. The radius of each circle is 3.

PLEASE HELP!!

circle A at bottom

circle B at upper right
circle C at upper left
side of triangle at upper right = x
so
(1/2) of the bottom is x/2, draw vertical altitude through top of triangle and center of circle A
NOW
draw line through centers of circles A and B extending beyond at both ends
It hits right side of triangle at right angle (tangent to circle perp to radius)
It hits our center altitude at 60 degree angle (30 at top of triangle so 60 at altitude intersection)
NOW
distance from intersection with altitude and right side of triangle = 2 radii, 3 + 3 + 3 = 9
SO
distance from top of triangle to that intersection = 9 sqrt 3
there is another radius length along the altitude to the center of the bottom of the triangle so the total height of the altitude = 3 + 9 sqrt 3
cos 30 = (3+9sqrt 3)/x = sqrt 3/2
x = (6+18 sqrt 3) / sqrt 3
simplify that and check my arithmetic

Joining all the centres will produce another equilateral triangle with sides 6

So there is no problem seeing that the distance from tangent contact point to tangent contact point on the bigger triangle is 6.
let's concentrate on one end of the figure
From one of the circles draw the radii to each of the tangents.
label the centre C, the contact points A and B and the intersection of the two tangents as D. Join D and C to form the right-angled triangle ACD

angle DCA = 60°
AC = 3
so tan 60° = AD/3
AD = 3tan60=3√3

At the end of each circle we have 2 of these lengths
so the total perimeter
= 6(3√3) + 3(6)
= 18√3 + 18 units

Thank you so much guys I really appreciate it!!!

To find the perimeter of the triangle, we need to determine the length of each side.

First, let's draw radii from the center of each circle to the points where the circles are tangent to the triangle. This will form three congruent equilateral triangles, one inside each larger side of the main equilateral triangle.

Since each circle has a radius of 3, the length of each radius will also be 3.

Now, let's consider one of the radii connecting the center of the circle to the point where it is tangent to the triangle. This forms a right angle with the side of the triangle.

Using the Pythagorean theorem, we can find the length of each side of the smaller equilateral triangle. The hypotenuse is the radius of the circle, which is 3, and the other side is half of the side of the smaller equilateral triangle. Let's call the length of the side of the smaller equilateral triangle "x."

Using the Pythagorean theorem, we have:
x^2 = 3^2 - (x/2)^2
x^2 = 9 - x^2/4

Next, we can solve this equation to find the value of x:
Multiply both sides by 4 to eliminate the fraction:
4x^2 = 36 - x^2
Combine like terms:
5x^2 = 36
Divide both sides by 5:
x^2 = 36/5
x ≈ √(36/5)
x ≈ √7.2
x ≈ 2.683

Since there are three sides in the smaller equilateral triangles, the total length of the three sides of the smaller equilateral triangles is approximately 3 * 2.683 = 8.049.

Because the larger equilateral triangle is made up of three smaller equilateral triangles, the perimeter of the larger equilateral triangle is three times the sum of the sides of the smaller triangles.

Thus, the perimeter of the larger equilateral triangle is approximately 3 * 8.049 = 24.147.

Therefore, the perimeter of the triangle is approximately 24.147.