Question

Rectangle A perimeter = 28 cm
Rectangle B perimeter = 46 cm
Rectangle C perimeter = 32 cm

Which rectangle cannot have an AREA (not perimeter) of 48 cm? Explain why.

Answer 1

48's factors:
1, 48=Perimeter of 98
2, 24=Perimeter of 52
3, 16=Perimeter of 41
4, 12=Perimeter of 32
6, 8=Perimeter of 24
Rectangle B, for none of them can have a perimeter of 46 cm.