# If each side of a cube is doubled, its volume?​

If each side of a cube is doubled, its volume?​

## This Post Has 7 Comments

1. Expert says:

step-by-step explanation:

2. kayladianemmp6qhfa says:

3. A cube with sides 4 m in length has a volume of 64 m². If each sideof the cube is doubled in length, what is the ratio of the new volume

to the old volume?

a 5:1

b 2:1

C 8.1

Explanation:

3. batmanmarie2004 says:

If you double each side the volume is 8 times

Must click thanks and mark brainliest

4. ohhrs says:

If a = 6l^2 is the total area of the surface of a cube with sides l length and A = 6 (2l)^2 is that area with 2l sides, then we take the ratio A/a = 6 (2l)^2/(6 l^2) = (2l)^2/l^2 = 4l^2/l^2 = 4. So that A = 4a. And that explicitly shows that the area A with 2l for sides is 4 X a, where a is the area when l is the side length.

Using ratios to compare values of the same thing is the smart way to solve this kind of problem, because many of the values, like the 6 in both, cancel out. In fact, because we found that A/a = (2l/l)^2 we say in general that the area of a cube varies with the square of the length of its side.

5. Expert says:

Dis the solution here
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6. carmenala2 says: Longest rod = Diagonal of cuboid

= √( l²+b²+h²)

=√(12² + 9² + 8² )

=√( 144+81+64)

=√(289)

=17

Hence, longest rod that can be placed in a room of dimensions 12m x 9m x 8m is 17 m

7. lwilliams28 says:

Step-by-step explanation: 