SOLUTION: Are THE FOLLOWING STATEMENTS, ALWAYS, SOMETIMES OR NEVER TRUE. Please can you give examples If you double the edges the surface area doubles? If you double the sides of a r

Question 979245: Are THE FOLLOWING STATEMENTS, ALWAYS, SOMETIMES OR NEVER TRUE. Please can you give examples

If you double the edges the surface area doubles?
If you double the sides of a rectangle the area doubles?
If you double the sides of a rectangle the perimeter doubles?
Help would be very much appreciated.

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
If you double the edges the surface area doubles?
----
Never.
For a rectangle:
Area = L*W
2L*2W = 4L*W = 4 times the area, not 2 times.
If you mean a solid, eg a cube, it's the same answer.
SA = 6s^2
6*(2s)^2 = 24s^2 = 4 times the SA.
----------------------
If you double the sides of a rectangle the area doubles?
Same as above.
----------------------
If you double the sides of a rectangle the perimeter doubles?
Always.
P = 2*(W + L)
2*(2W + 2L) = 4*(W + L) = 2*p
================================
Area is in square units, eg, sq cms, sq feet, etc.
The sides are multiplied, so z*sides --> z^2*area.
--------------
Perimeter is only added, and units are cms, feet etc.
z*sides --> z*perimeter

RELATED QUESTIONS
Please help Which of the following are always,sometimes or never true. Examples to show... (answered by anand429)

Hello! Could you please help my child with these questions? Would appreciate if could... (answered by ikleyn)

IS the following statement always, sometimes or never true If you double the lengths... (answered by Alan3354)

Is it always true, sometimes, true, or never true that the acure angles of a right... (answered by richard1234)

Are these statements always, sometimes, or never true? If never, what is a... (answered by Theo)

Is the equation √[ (3x +7)2] = 3x + 7 sometimes true, always true, or never true? (answered by jim_thompson5910)

determine whether the equation y-y=y is sometimes always or never true justify your... (answered by Alan3354)

Would you pls help me to answer this: 3. Arianna is trying to determine if the following (answered by jim_thompson5910)

Determine if the following is always, sometimes, or never true. y = -1/5 x + 3 is a... (answered by Fombitz)