Answer:
19cm
Step-by-step explanation:
Perimeter =54 cm
let the length be x
the width is 11cm longer than the length so it will be x + 11
and we have 2 lengths and 2 widths in a rectangle, so the equation is:
x+x+x+11cm+x+11cm=54cm
4x+22cm=54cm
4x=54cm-22cm
4x=32cm
divide both sides by 4 to find x
x=8cm
previously I said the length is x and the width is x+11, and we've found the length which is x, so to find the width:
x+11cm
8cm+11cm=19cm
