SOLUTION: the length of a rectangle is fixed at 20cm. What widths will make the perimeter greate than 76cm I thought the formula was L=w+76 This is where I confuse myself could you ple

Algebra ->  Expressions -> SOLUTION: the length of a rectangle is fixed at 20cm. What widths will make the perimeter greate than 76cm I thought the formula was L=w+76 This is where I confuse myself could you ple      Log On


   



Question 357099: the length of a rectangle is fixed at 20cm. What widths will make the perimeter greate than 76cm
I thought the formula was L=w+76
This is where I confuse myself could you please help me

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi,
*Note: Perimeter(distance all away around) is the sum of the lengths of ALL four sides.
2*l + 2*w = P
length of a rectangle is fixed at 20cm.
What widths will make the perimeter greater than 76cm
2*20cm + 2w >76cm
40cm + 2w >76cm
2w > 36cm
w > 18cm