81 times 11 is 891
hope this helps u figure out your problem.
Hi :)
Radius is half the diameter
4.6 mm (2) = 9.2 mm
The diameter of the circle is 9.2 mm.
I hope this helps you
let's find AB
AB=square root of 2^2+3^2
AB=square root of 13
cosO=2/sqrt13
sinO=3/sqrt13
tgO=3/2
ctgO=2/3
