Recall the formula for factoring the difference of
two squares:
22-D2 = (a + b)(a - b)
Use the formula to factor 78 - 9.
What is the value of a?
=
"5
"
DONE

i hope this is what you were looking for.

see attached graph

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

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