Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4.
2 answers:
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:
65.94
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
3.14(a² + ab)
<em>a</em> = 3
<em>b</em> = 4
<u>Step 2: Evaluate</u>
- Substitute in variables: 3.14(3² + 3 · 4)
- (Parenthesis) Exponents: 3.14(9 + 3 · 4)
- (Parenthesis) Multiply: 3.14(9 + 12)
- (Parenthesis) Add: 3.14(21)
- Multiply: 65.94
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