Find the dimensions of cuboid it's volume is 3k² - 12k
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Answered by
10
Answer
=) x^3-25x = x(x-5)(x+5)
=) volume of cuboid = lbh
so dimensions are x , x-5 , x+5 ...ans
2)
6kt^2 - 21kt -12k
taking out common 3k
3k(2t^2 - 7t - 4)
= 3k(2t^2 - 8t +t -4)
= 3k[ 2t(t - 4) +1(t-4)]
= 3k(t-4)(2t+1)
dimensions are 3k , t-4 , 2t+1
Answered by
19
Answer:
Let l=3x1,b=2x1,h=x
∴ Volume of cuboid = lbh
⇒3x×2x×x=1296m3⇒x3=216
⇒x=3216=6m
∴ l=18m,b=12m,h=6m
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