hugomimihu

Hi!

Gwen, and guest, here are a few hints.

From my response:

We notice that triangles ABD and CDE are isosceles. If triangle ACE is indeed isosceles, then . It also appears that triangles ADC and BDE are similar. This is because BDE and  ADC are equal, ADB and BAC are also equal. Furthermore,DBE = BAD , and since AE is the angle bisector of BAC, DBE = DAC. Since two angles are congruent, these triangles are similar. Because triangles BDE and ADC are similar, triangles ABD and CDE are too.

This is MY OWN RESPONSE

So I IMPLORE you to not copy this.

Please just try to follow my logic(this is correct, 7/7 and 0.8/1, note this is part of it)

At the very least paraphrase.

Feel free to ask about anything!

True.. but this is more of a logical explanation(your math is definitely correct, didn't think of that!)

However, 0.99999... more of converges to 1 but never truly reaches it.

Eventually the difference is so small so we basically call it one.

eventually the thing is 0.000000....1 but... it goes on forever. So there is no end digit!

Thus the thing is actually 0.00000...0000...0000..

Soooo

:)

A circle is 2π radians.

So the angle measure is 0.8/2π = 0.4/π part of the circle.

The circle has circumference 2π20 = 40π

So thus...

We multiply 0.4/π by 40π to get the length AB, so thus (0.4 * 40π)/(π) = 16π/π = 16

If you don't understand anything, feel free to ask!

Again, apologies for my late reply.

I sssume you figured it out, and if so, great job, if not, feel free to ask here!

Hi.

One, could you please fix the latex, and add an image(if provided)?

Thanks!

hi, sorry for the late reply.

Anyways!

We know that AC is the base. 

The formula for area of ABC is, lh/2, so l*h = 480.

We also know that AC is the l.

Can you tell the height now?

Then, use the height, and using pythog, calculate the sides.

(only one is required as it's Isoceles, and remember that the base needs to be divided by two to do the pythog!)