algebra 1 help
posted by anonymous .
simplifying square roots
1) find volume of this prism?
v=bwh
b=√12"
w=√6"
h=√8"
2)simplify: √576
3)simplify: √400
4)simplify: √256
5)simplify: √(1/4)
ex 2√5 + 6√5= 8√5
the answer has to be in √
but i don't understand it i got help by my teacher but i'm still confused

1)
V = b w h
V = sqrt ( 12 ) * sqrt ( 6 ) * sqrt ( 8 ) = sqrt ( 12 * 6 * 8 ) = sqrt ( 576 ) = 24 " ^ 3
2 )
576 = 24 * 24 = 24 ^ 2
sqrt ( 576 ) = sqrt ( 24 ^ 2 ) = + OR  24
3 )
400 = 20 * 20 = 20 ^ 2
sqrt ( 400 ) = sqrt ( 20 ^ 2 ) = + OR  20
4 )
256 = 16 * 16 = 16 ^ 2
sqrt ( 256 ) = sqrt ( 16 ^ 2 ) = + OR  16
5 )
1 / 4 = ( 1 / 2 ) * ( 1 / 2 ) = ( 1 / 2 ) ^ 2
sqrt ( 1 / 4 ) = sqrt [ ( 1 / 2 ) ^ 2 ] = + OR  1 / 2 
for #1 why did you get a ^ isn't the final answer supposed to be a sqrt

That is maximum simplified answers.
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