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What is the area of a circle with radius 7? (2022)

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Question: What is the area of a circle with radius 7? (2022)

Options:

  1. 154
  2. 144
  3. 160
  4. 150

Correct Answer: 154

Solution: 

Area = πr^2 = π(7^2) = 49π ≈ 154.

What is the area of a circle with radius 7? (2022)

Practice Questions

Q1
What is the area of a circle with radius 7? (2022)
  1. 154
  2. 144
  3. 160
  4. 150

Questions & Step-by-Step Solutions

What is the area of a circle with radius 7? (2022)
  • Step 1: Identify the formula for the area of a circle, which is Area = πr^2.
  • Step 2: Find the radius of the circle, which is given as 7.
  • Step 3: Substitute the radius into the formula: Area = π(7^2).
  • Step 4: Calculate 7^2, which is 49.
  • Step 5: Now the formula looks like this: Area = π(49).
  • Step 6: This simplifies to Area = 49π.
  • Step 7: To get an approximate numerical value, use π ≈ 3.14.
  • Step 8: Multiply 49 by 3.14 to get approximately 154.
  • Area of a Circle – The area of a circle is calculated using the formula A = πr², where r is the radius.
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