Question

Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4.

Answer 1

Hey there!

3.14(a^2 + ab)

= 3.14(3^2 + 3 *4)

3^2

= 3 * 3

= 9

3 * 4

= 12

3.14(9 + 12)

9 + 12

= 21

3.14(21)

= 65.94

Answer: 65.94

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

Answer 2

65.94

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Explanation:

Step 1: Define

Identify

3.14(a² + ab)

a = 3

b = 4

Step 2: Evaluate

1. Substitute in variables: 3.14(3² + 3 · 4)
2. (Parenthesis) Exponents: 3.14(9 + 3 · 4)
3. (Parenthesis) Multiply: 3.14(9 + 12)
4. (Parenthesis) Add: 3.14(21)
5. Multiply: 65.94