Question

If OB = 10 and RB = 8, then OR = ?

Answer 1

do u have a pic attached to this problem ?

Answer 2

u knw pythagoras theorem ?

Answer 3

Umm sorta

Answer 4

good. we need to apply it here.
the little square at R means, its a right angle.

can u apply pythagoras theorem in triangle ORB ?

Answer 5

I think so. So would it be a²+b²=c² ?

Answer 6

thats right. can u apply the same in triangle ORB ?

Answer 7

Yes :) So I think It has something to do with 45-45-90, right?

Answer 8

Yes :) So I think It has something to do with 45-45-90, right?

Answer 9

Yes :) So I think It has something to do with 45-45-90, right?

Answer 10

its not that difficult. il work this out for u. see if it makes sense.
in ORB right triangle, applying pythagoras theorem gives us :
OB^2 = OR^2 + RB^2
10^2 = OR^2 + 8^2
100 = OR^2 + 64
OR^2 = 100-64
OR^2 = 36
OR = 6

Answer 11

How'd you get 100-64?