What is 9 squared?

What is 9 squared?

• A. 18
• B. 27
• C. 81
• D. 72

Answer: (C)

To understand why 81 is the correct answer for 9 squared, it’s essential to grasp what the term "squared" means in mathematics. When a number is squared, it is multiplied by itself. So, for 9 squared, we perform the calculation as follows: 9 squared is calculated as \(9 \times 9\). Now let's do the multiplication: - \(9 \times 9 = 81\). Thus, 9 squared equals 81. This concept is foundational in mathematics and frequently appears in various mathematical contexts like geometry, algebra, and even in practical applications where understanding area or other squared measurements is necessary. This interpretation clearly shows that 9 squared results in 81, validating why this answer is correct.

To understand why 81 is the correct answer for 9 squared, it’s essential to grasp what the term "squared" means in mathematics. When a number is squared, it is multiplied by itself. So, for 9 squared, we perform the calculation as follows:

9 squared is calculated as (9 \times 9).

Now let's do the multiplication:

• (9 \times 9 = 81).

Thus, 9 squared equals 81. This concept is foundational in mathematics and frequently appears in various mathematical contexts like geometry, algebra, and even in practical applications where understanding area or other squared measurements is necessary.

This interpretation clearly shows that 9 squared results in 81, validating why this answer is correct.