If anyone knows help please

SA : 2( wl + lh + hw)

Our width is x centimeters, length is x +4 centimeters and the height is 15 centimeters. Then, we will plug it in.

SA : 2 ( x ( x + 4) + ( x + 4 ) 15 + 15 ( x) )

Then, let's distribute the terms.

2 ( ( x^2 + 4x) + (15x + 60) + 15x

2x^2 + 8x + 30x + 120 + 30x

2x^2 + 68x + 120 = 264

2x^2 + 68x  - 144

Factor it out:

(x-2)(x+36)

x -2 = 0

+ 2

x  = 2

Plug it in.

V = 2(2 + 4)(15)

V = 2(6 x 15)

V = 2 x 90

V = 180

V = 180cm^3

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6