Ok so
1 find volume of 1 cube
2. find total volume of rectangular prism
1/2 m cubes
volume=side^3
side=1/2m (I guess since that was what was given)
v=1/2^3=1/8
so
volume of 1 cube times number of cubes=total volume
1/8m^3 times number of cubes=5m^3
multiply both siides by 8/1 m^3 to clea fraction (since 8/1 times 1/8=8/8=1)
number of cubes=40
needs 40 cubes
Answer: What's even the question? It's not asking anything to solve
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
Remember the mnemonic: SohCahToa, where:

Let's determine our side lengths first.
Note that our angle is A. So, we have to determine the sides with respect to A.
The opposite side to A is 16.
The adjacent side is 12.
And the hypotenuse is 20.
With this, we can find our trig ratios:
Sine:

Substitute 16 for the opposite and 20 for the hypotenuse. This yields:

Reduce:

Cosine:

Substitute 12 for the adjacent and 20 for the hypotenuse. This yields:

Reduce:

Tangent:

Substitute 16 for the opposite and 12 for the adjacent. This yields:

Reduce:

So, our answers are:

Out of the answer choices, the choice that represents this is C.
So, our correct answer is C.
And we're done!