Answer:
length = 28 mm
Step-by-step explanation:
The perimeter (P) of a rectangle is calculated as
• P = 2(length + width )
given P = 72 , then
2(length + width) = 72 ( divide both sides by 2 )
length + width = 36 ( substitute width = 8 )
length + 8 = 36 ( subtract 8 from both sides )
length = 28 mm
