Respuesta :

Use the Pythagorean theorem a^2+b^2=c^2
6^2+9^2=c^2
36+81=c^2
117=c^2
find the square root of 117
the answer is  11
fakejonsmith
use pythagorus, a² + b² = c²

in this case you have c and either a or b. (it doesn't matter which, i'll use a)

using a bit of algebra, you can turn your formula into b = [tex] \sqrt{(c² - a²)} [/tex]

now all you have to do is plug in your numbers. a = 6mm and c = 9mm

b = [tex] \sqrt{((9)² - (6)²)} [/tex] = [tex] \sqrt{(81 - 36)} [/tex] = [tex] \sqrt{45} [/tex] ≈ 6.7mm