Answer:240 square feet
Step-by-step explanation:
I hope this helps you
x^2+4x+3=2x+6
x^2+2x-3 =0
x +3
x -1
(x+3)(x-1)=0
x+3=0 x= -3
x-1=0 x=1
Surface area is the combined areas of all the sides of the shape and volume is the area within the shape
for example if you had a box filled with water the area of the box is the surface area and the amount of water would represent the volume
First you had to expanded form.
Finally you can also add by similar to elements.
Final answer: 
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
