Answer:
A: She lined up the protractor incorrectly.
Hope it helps:)
Step-by-step explanation:
Get the square root of 316 which is 17.8
To get surface area you do cross section area x6
17.8×17.8×6=1896
To get volume you do length ×height ×width
17.8×17.8×17.8=5639.752cm³ or 5640cm³ if rounded off
I think the answer is 300+20+8
and 400+7 :)
The answer is 3x^2 - 2.
x^2+3y-3+2x^2-3y+1
Add the like terms together, you get 3x^2 - 2