Question

Complete the following for a rectangular prism

Answer 1

Answer:

Width : $8cm$

Surface Area : $272cm^2$

Step-by-step explanation:

Let's consider the formula for the volume of a rectangular prism.

$V=whl$

Plug the values we know into the equation.

$192=w*2*12 \\ \\ 192=24w \\ \\ w=8$

So the width is 8cm.

Now let's consider the formula for the surface area of a rectangular prism.

$A=2(wl+hl+hw)$

Plug in the values we know into the equation.

$A=2(16+24+96) \\ \\ A=2*136 \\ \\ A=272$

So the surface area is $272cm^2$.

Answer 2

Width= 8 cm

Because 192 / 2 = 96 / 12 = 8

SA= (perimeter * height) + 2 (length * width)

SA= (20*12)+2(2*8)

SA= 240+32

SA= 272 cm2