Question

If BC=8 and DC=4, what is the radius?http://www.intervisualtechnology.us/data/1/9050/apply_12_1.png

Answer 1

note the radius an x and use pythagora"s bc. there is a right triangle so you can calculi it easy in this way

Answer 2

AC = 4+x

Answer 3

AB = x
BC=8

Answer 4

using pythagora"s you can writing

(x+4)^2 = 64 +x^2

do you can continue it now ?

Answer 5

x^2 +8x +16 = 64 +x^2

solve it for x

Answer 6

8x=48

x = ?

Answer 7

divide both sides by 8 what will get for x ?

Answer 8

x=6

Answer 9

exactly

do you understand it now ?

Answer 10

hope helped

bye bye

Answer 11

thank u