Healp

[prisma falcon]

1. Ask your question and show the work you've done so far. If you've posted a screenshot of a question, specify which part you need help with.
2. Wait patiently for a helper to come along.
3. Once someone helps you, say thank you and close the thread with:

   +close
   

4. Feel free to nominate the person for helper of the week in #helper-nominations
5. Do not ping the mods, unless someone is breaking the rules.
6. If you're happy with the help you got here, and the server overall, you can contribute financially as well:

[tepid quarry]

What indeed

[dense parrot]

Oh this is easy

just look at the right side

it’s self explanatory

[rough lodge]

Let the black dot in the middle be O, the point on the complete right be A and on the left be B

Let OA be x and OB be 16 - x

Use the Pythagorean theorem, build a system of equations and get the answer

[tepid quarry]

In this case we don't know the slant height with B on one end

[rough lodge]

What's 15?

[tepid quarry]

Spoiler

[rough lodge]

OH

I can't believe I have fallen into the same trap as OP

Maybe I should just quit helping all together

[fresh forge]

hahaha

[rugged thicket]

+close