answer it hurry up please please
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hey there!
your answer is here.
Let the length and height be 5x and 3x respectively.
Lateral surface area of cuboid = 2h(l+b)
486 = 2(3x) (5x+12)
243 = 15x² + 36x
15x²+36x-243 = 0
By quadratic formula
X= -b±√b²-4ac/2a
= -36±√36²-4(15)(-243)/2(15)
= -36±√15876/30
= -36±126/30
= 90/30
= 3
Length = 5x = 5(3) = 15cm
Height= 3x = 3(3)= 9cm
hope it helps
your answer is here.
Let the length and height be 5x and 3x respectively.
Lateral surface area of cuboid = 2h(l+b)
486 = 2(3x) (5x+12)
243 = 15x² + 36x
15x²+36x-243 = 0
By quadratic formula
X= -b±√b²-4ac/2a
= -36±√36²-4(15)(-243)/2(15)
= -36±√15876/30
= -36±126/30
= 90/30
= 3
Length = 5x = 5(3) = 15cm
Height= 3x = 3(3)= 9cm
hope it helps
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