Find the number of square inches in one square foot.

We will use the concept of measuring systems in order to find the required answer. We will use the fact that 1 foot is equal to 12 inches.

Answer: 1 sq foot = 144 sq inches

Let us see how we will use the concept of measuring systems in order to find the required answer.

Explanation:

We know that 1 foot (ft.) = 12 inches (inch)

1 sq foot = 1 foot × 1 foot

1 sq foot = 12 inches × 12 inches = 144 square inches

Thus, 1 sq foot = 144 sq inches