AB is 5.61 mm. CD is 2.4684 mm. AD is 11.22 mm. Find BC

Question

asked Oct 28, 2020 34.6k views

1 Answer

KeithB · Answer 1 · 2020-11-01T04:24:23+0000

Answer:

$BC=3.1416\ mm$

Explanation:

we know that

AD=AB+BC+CD ---> by addition segment postulate

we have

$AB=5.61\ mm\\CD=2.4684\ mm\\AD=11.22\ mm$

substitute the given values

11.22=5.61+BC+2.4684

Rewrite as

11.2200=5.6100+BC+2.4684

Solve for BC

11.2200=(5.6100+2.4684)+BC

11.2200=8.0784+BC

BC=11.2200-8.0784

$BC=3.1416\ mm$