I REALLY NEED SOMEONE TO HELP ME WITH AT LEAST ONE OF THESE PROBLEMS.. PLEASE The solid is similar to a larger solid with the given scale factor, find the surface area and volume of the larger solid.
1) Cylinder: scale factor 1:2, SA=208pi in^2, V=320pi in^3
2)rectangle: scale factor 1:3, SA= 398in^2, V= 495in^3
3) cone: scale factor 3:4, SA=96pi cm^2, V=96pi cm^3

Question

anonymous · Answer

You would get better help if you post one question per post. You can follow the answers better.

anonymous · Answer

For the rectangle, you would be finding perimeter and area, are you sure it isn't a box or parallepiped?

anonymous · Answer

attachment

anonymous · Answer

Okay, so Height, Width, Depth
V = 495 = HWD
S = 398 = 2(DH + HW + DW)

Scaling by 3, we get V = 3H*3W*3D = 27HWD=27V = 27*495=1485

S = 2(3D * 3H + 3H*3W+3D*3W) = 
2(9DH+9HW+9DW) = 2*9(DH+HW+DW)= 
9*2(DH+HW+DW)=9*S=9*398=3582

And of course, dont' forget your units!

anonymous · Answer

1485 in^3 is the volume, 3582 in^2 is the surface area?

anonymous · Answer

thank you for your help

anonymous · Answer

yes, and no problem!