Geometry - area and perimeter

Question

find the length of a rectangle if it has an area of 108m2 and a width of 9m then also find the perimeter.

Answer 1

I would recommend that you keep your units on your measures even as you do these calculations. This will lessen confusion as you progress through this material.

It is just a good habit to have as a beginner.

Answer 2

Area = Length x Width

Area =108 m²

Width = 9 m

Length = Area / Width

Length = 108 / 9 = 12 m

Perimeter = (2 x Length) + (2 x Width)

Perimeter = (2 x 12) + (2 x 9) = 44 m

Solved