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What is the area of the base of a cone with radius 3? (2023)

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Question: What is the area of the base of a cone with radius 3? (2023)

Options:

  1. 9π
  2. 6π
  3. 3π
  4. 12π

Correct Answer: 9π

Solution: 

Area of base = πr² = π(3²) = 9π square units.

What is the area of the base of a cone with radius 3? (2023)

Practice Questions

Q1
What is the area of the base of a cone with radius 3? (2023)
  1. 9π
  2. 6π
  3. 3π
  4. 12π

Questions & Step-by-Step Solutions

What is the area of the base of a cone with radius 3? (2023)
  • Step 1: Identify the formula for the area of the base of a cone, which is A = πr².
  • Step 2: Substitute the radius (r) into the formula. Here, the radius is 3.
  • Step 3: Calculate the square of the radius: 3² = 9.
  • Step 4: Multiply the result by π: Area = π * 9.
  • Step 5: Write the final answer: The area of the base is 9π square units.
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