Question

What is the volume of this cuboid?
Please help me!!!?!

Answer 1

The formula of a volume of a cuboid:

`V=lwh`

l - length

w - width

h - height

We have:

l = (x + 4) cm

w = (x + 1) cm

h = 3 cm

Substitute:

`V=(x+4)(x+1)(3)` use distributive property

`V=(x+4)(3x+3)`

`V=(x)(3x)+(x)(3)+(4)(3x)+(4)(3)`

`V=3x^2+3x+12x+12` combine like terms

`\boxed{V=3x^2+15x+12}`