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What is the area of a circle with a radius of 4?

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Question: What is the area of a circle with a radius of 4?

Options:

  1. 16π
  2. 8π
  3. 12π
  4. 20π

Correct Answer: 16π

Solution: 

Area = πr² = π(4)² = 16π.

What is the area of a circle with a radius of 4?

Practice Questions

Q1
What is the area of a circle with a radius of 4?
  1. 16π
  2. 8π
  3. 12π
  4. 20π

Questions & Step-by-Step Solutions

What is the area of a circle with a radius of 4?
  • Step 1: Identify the radius of the circle. In this case, the radius (r) is 4.
  • Step 2: Use the formula for the area of a circle, which is Area = πr².
  • Step 3: Substitute the radius into the formula. So, Area = π(4)².
  • Step 4: Calculate (4)², which is 16.
  • Step 5: Now, replace (4)² with 16 in the formula. So, Area = 16π.
  • Step 6: The area of the circle is 16π.
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