Question

how to find the following distance?

Answer 1

do you need help?

Answer 2

yes

Answer 3

cool alrighty so what are we looking at? Aka what is that shape?

Answer 4

@phi

Answer 5

I'm a bit puzzled? do you not want my help?

Answer 6

its a semicircle.

Answer 7

@jim_thompson5910

Answer 8

right! And like a regular circle, semi circles have a radius. what is the radius of this semicircle?

Answer 9

2.5

Answer 10

right now do you notice something odd? what if you made a line from D to the center of the semicircle (where you would have drawn the radii)

Answer 11

at the center. which is 2.5cm

Answer 12

yes doesn't that form a triangle?

Answer 13

got it thanks

Answer 14

alright. You got it from here?

Answer 15

yes thanks!

Answer 16

no problem.