The area of a rectangular field is 96m2. Te length of one side is 12m. The farmer needs to know its perimeter to work out how much fencing will be needed

Area (rectagular field) = side₁ x side₂

Area=96 m²

side₁=12 m

96 m²=12 m * side₂

side₂=96 m²/12m=8m.

Perímeter (rectangular field) = 2*side₁+2*side₂

Perimeter (rectangular field) = 2*12 m+2*8 m=24 m+16 m=40 m.

Answer: he needs 40 m of fencing.