SA of cube =6s²=6(9²)=486
lateral area of cylinder (area of height around tube; also don't need to include area of circle as it is part of the cubes SA)= 2(3.14)rh=6.28(3)(4)= 75.36
add together 561.36<span />
The last one (-1,0) (2, 15) (20)
I'm pretty sure the answer is 2.9 because It's closer to 3 than 2
