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A circular dome has a radius of 7 meters. What is the circumference of the dome?

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Question: A circular dome has a radius of 7 meters. What is the circumference of the dome?

Options:

  1. 14Ï€ meters
  2. 21Ï€ meters
  3. 28Ï€ meters
  4. 49Ï€ meters

Correct Answer: 14Ï€ meters

Solution: 

Circumference = 2 * π * radius = 2 * π * 7 = 14π meters.

A circular dome has a radius of 7 meters. What is the circumference of the dome?

Practice Questions

Q1
A circular dome has a radius of 7 meters. What is the circumference of the dome?
  1. 14Ï€ meters
  2. 21Ï€ meters
  3. 28Ï€ meters
  4. 49Ï€ meters

Questions & Step-by-Step Solutions

A circular dome has a radius of 7 meters. What is the circumference of the dome?
  • Step 1: Identify the formula for the circumference of a circle, which is Circumference = 2 * Ï€ * radius.
  • Step 2: Substitute the radius of the dome into the formula. The radius is 7 meters.
  • Step 3: Calculate the circumference by multiplying: 2 * Ï€ * 7.
  • Step 4: Simplify the multiplication: 2 * 7 = 14, so the circumference is 14Ï€ meters.
  • Circumference of a Circle – The circumference of a circle is calculated using the formula C = 2 * Ï€ * r, where r is the radius.
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