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What is the area of a circle with a radius of 8 cm?

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Question: What is the area of a circle with a radius of 8 cm?

Options:

  1. 64π cm²
  2. 32π cm²
  3. 16π cm²
  4. 24π cm²

Correct Answer: 64π cm²

Solution: 

Area = πr² = π(8)² = 64π cm².

What is the area of a circle with a radius of 8 cm?

Practice Questions

Q1
What is the area of a circle with a radius of 8 cm?
  1. 64π cm²
  2. 32π cm²
  3. 16π cm²
  4. 24π cm²

Questions & Step-by-Step Solutions

What is the area of a circle with a radius of 8 cm?
  • Step 1: Identify the formula for the area of a circle, which is Area = πr².
  • Step 2: Substitute the radius (r) into the formula. Here, the radius is 8 cm.
  • Step 3: Calculate the square of the radius: (8)² = 64.
  • Step 4: Multiply the result by π: Area = 64π cm².
  • 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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