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What is the area of a circle with a radius of 7 units?

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Question: What is the area of a circle with a radius of 7 units?

Options:

  1. 49π
  2. 14π
  3. 21π
  4. 28π

Correct Answer: 49π

Solution: 

Area = πr² = π(7)² = 49π.

What is the area of a circle with a radius of 7 units?

Practice Questions

Q1
What is the area of a circle with a radius of 7 units?
  1. 49π
  2. 14π
  3. 21π
  4. 28π

Questions & Step-by-Step Solutions

What is the area of a circle with a radius of 7 units?
  • Step 1: Identify the formula for the area of a circle, which is Area = πr².
  • Step 2: Identify the radius of the circle, which is given as 7 units.
  • Step 3: Substitute the radius into the formula. This means replacing 'r' with 7 in the formula: Area = π(7)².
  • Step 4: Calculate (7)², which is 7 times 7. This equals 49.
  • Step 5: Now, substitute this value back into the formula: Area = π(49).
  • Step 6: The final answer is Area = 49π.
  • 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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