Question

8 find the area
12 mm
12 mm
a = l×w
a = 12×12

Explanation:

Step1: Recall the formula for the area of a square

The formula for the area of a square is \(A = s\times s\) (where \(s\) is the side - length of the square). Here, \(s = 12\) mm.

Step2: Calculate the area

Substitute \(s = 12\) into the formula \(A=12\times12\). Using the multiplication operation \(12\times12=(10 + 2)\times(10 + 2)=10\times10+2\times10+2\times10+2\times2=100 + 20+20 + 4=144\) (mm²)

Answer:

The area of the square is \(144\) mm².