What is volume to a cube?

Mathematics

2 answers:

Sergio039 [100]3 years ago

5 0

Answer: The volume of a cube is 6s^3

Step-by-step explanation:

Since a cube is equivalent on all sides, and a cube has 6 sides, you multiply the length of one side (s) by the number of sides (6)

For example, let’s say the length is 7.2”

You would multiply 6 and 7.2^3” to get 2239.49 cubic inches

Hope this helps!

Setler79 [48]3 years ago

4 0

Volume = length x width x height. You only need to know one side to figure out the volume of a cube. The units of measure for volume are cubic units. Volume is in three-dimensions. You can multiply the sides in any order.

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The volume of a cube is 27 cubic meters. what is its surface area in square meters?

erma4kov [3.2K]

To find the answer, take the measurement of an edge of the cube, multiply it by 6, and then square that number.

Ex:

Edge = 16

Faces in 1 cube = 6

6 * 16 = 96

96^2 (which is just 96 * 96)= 9,216

I hope this helps! :)

4 0

3 years ago

What is the value of (7 + 2i)(3 - i)?

Harrizon [31]

There are two ways to work this out: normal variables or using "imaginary" numbers.

Normal variables:
$(7+2i)(3-i)\\(7*3)+[7*(-i)]+(3*2i)+[2i*(-i)]\\21-7i+6i-2i^{2}\\\\21-i-2i^{2}$

Imaginary numbers:
Using the result from earlier:
$21-i-2i^{2}$
Now since $i = \sqrt{-1}$ , then the expression becomes:
$21-i-2i^{2}\\21-i-2(\sqrt{-1})^{2}\\21-i+(-2)(-1)\\21-i+2\\\\23-i$