(i) length × breadth × height
= Volume of Cuboid
= 3x2 – 12x
= 3x2 – 12x
= 3x(x – 4)
= 3 × x × (x – 4)
l × b × h
∴ Length = 3 Breadth = x Height = (x – 4)
(ii) length × breadth × height
= Volume of Cuboid
= 12ky2 + 8ky – 20k
12ky2 + 8ky – 20k
= 4k(3y2 + 2y – 5)
= 4k (3y2 + 5y – 3y – 5)
= 4k (y(3y + 5) – 1
(3y + 5)) = 4k × (3y + 5) × (y – 1)
l × b × h
∴ Length = 4k
Breadth = (3y + 5)
Height = (y – 1)