Help? please
a perimeter of 100cm and
the largest possible area

Perimeter = Length + Length + Width + Width
Area = Length x Width

to find the perimeter , you have to add all 4 sides of the shape . if the perimeter is 100 therefore you can divide 100 by 4 and get 25 . If all sides are 25 cm , then the area would be 25 x 25

Let me know if this helps!