Answer: length = 20.1
Width=17.6
Step-by-step explanation:
Answer: 320
<u>Step-by-step explanation:</u>





The volume of the cube would be S^3, where S is the length of the side.
Volume = (5a + 4b)^3
Which becomes:
(5a+4b)(5a+4b)(5a+4b)
Multiply the first two sets of parenthesis by each other:
(25a^2+40ab+16b^2)(5a+4b)
Now multiply that by the 3rd set of parenthesis to get:
125a^3+300a^2b + 240ab^2 + b^3
Answer:
The first choice.
Step-by-step explanation:
Hope this helps!
=)
Answer:
2k
Step-by-step explanation:
-k+3k
2k