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If the radius of a circle is 5, what is the area of the circle?

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Question: If the radius of a circle is 5, what is the area of the circle?

Options:

  1. 25π
  2. 20π
  3. 30π
  4. 15π

Correct Answer: 25π

Solution: 

The area of a circle is given by A = πr^2. Therefore, A = π(5^2) = 25π.

If the radius of a circle is 5, what is the area of the circle?

Practice Questions

Q1
If the radius of a circle is 5, what is the area of the circle?
  1. 25π
  2. 20π
  3. 30π
  4. 15π

Questions & Step-by-Step Solutions

If the radius of a circle is 5, what is the area of the circle?
  • Step 1: Understand that the area of a circle can be calculated using the formula A = πr^2.
  • Step 2: Identify the radius of the circle, which is given as 5.
  • Step 3: Substitute the radius into the formula. So, replace r with 5 in A = πr^2.
  • Step 4: Calculate 5 squared (5^2), which is 25.
  • Step 5: Now, multiply 25 by π. This gives you the area as 25π.
  • Area of a Circle – The area of a circle is calculated using the formula A = πr^2, where r is the radius.
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