Question

Calculating area of rectangle

Your measurments Another student's measurements
Length (cm) 20.70 20.74
Width (cm) 10.44 10.46
Area (cm2)

Required:
Why might two students have different calculated areas when measuring the same rectangle?

Answer 1

`Area = 216.108cm^2` --- You

`Area = 216.940cm^2` --- Another student

Reason: Because there is a variation in the given dimensions

Explanation:

Given

Your measurement

`Length = 20.70cm; Width =10.44cm`

Another students'

`Length = 20.74cm; Width =10.46cm`

Solving (a): The area

Area is calculated as:

`Area = Length * Width`

For you

`Area = 20.70cm * 10.44cm`

`Area = 216.108cm^2`

For the other student

`Area = 20.74cm * 10.46cm`

`Area = 216.940cm^2`

Solving (b): Reason for the variation in the areas

The given measurements are estimates of the dimensions of the rectangle.

Since there is a variation in the estimates, there will be some level of variation in the calculated area.