Question

What is number 15 (explain it too please)

Answer 1

To find the volume of a rectangular prism, you would simply need to multiply the length * width * height.  Here, that means 3 * 2 * 2 = 12.  12 cm3 is your answer.

Answer 2

Hi,

To find a volume of cuboid (rectangular prism) you need to multiply it's width, height and length.

So formula is:

$v = a \times b \times c$

Now just put in the values.

$v = 3 \times 2 \times 2 \\ v = 6 \times 2 \\ v = 12$

Answer: 12cm3

Hope this helps.
r3t40