Question

PLEASE HELP !
A cube has a side length of 2x + 1. (See the drawing on the sheet found in the instructions.)
A. Write and simplify an expression for the volume of the cube. (10 points)
B. What is the volume of the cube if x = 4 inches? Remember to label your answer. (5 points)

Answer 1

Question #11

Answer 2

i need help !

Answer 3

Okay well whats your formula to find the area of a cube?

Answer 4

S = 6s^2

Answer 5

then just plug your numbers in

Answer 6

hmmm okay , i'll try that.

Answer 7

S = 6(2x+1)^2

Answer 8

Area of a cube=\[A=s ^{3}\]

Answer 9

okay then , A = 2x+1^3

Answer 10

how do i figure that out?

Answer 11

\[A=(2x+1)^{3}\]

Answer 12

\[A=(2x+1)(2x+1)(2x+1)\]

Answer 13

A=6x+1 ?

Answer 14

or A = 8x+1 ?

Answer 15

Its going to be messier than that, cause your X is going to be cubed in the end.

Answer 16

so how do i find out what my final answer will be ?

Answer 17

\[8x ^{7}+6x+1\] Will be your answer I believe. I'm not 100% sure though, I did this stuff years ago.

Answer 18

My bad it'll be \[2x ^{5}+6x ^{2}+6x+1\]

Answer 19

OH MY GOODNESS ! thank you soo much for your help .

Answer 20

You're welcome, I hope it's correct! :)

Answer 21

Thanks .

Answer 22

Good luck!