Answer:
0.512a³ cubic units
Step-by-step explanation:
Given a cube of length, a, then when decreased by 20%, what's left is actually 80% of the original. So, for this case, we have a cube with a length of 80%(a) = 0.80a.
Now, to compute for the volume of a cube, we multiply the length three times to itself. Or, in other words, raise the length to the third power. That means the volume of the new cube is (0.8a)³ = 0.512a³ cubic units.
81 is the correct answer
hope it helps you have a good day
Answer:
4/9
Step-by-step explanation:
You're welcome i worked it out on a piece of paper
3×3=9 miles. As a result, hiker traveled total 9 miles in that time. Hope it help!
Answer:
84
Step-by-step explanation:
