My Learning Cart
?
Categories
Account

If the radius of a circle is 7 cm, what is the circumference?

₹0.0
Login to Download
  • 📥 Instant PDF Download
  • ♾ Lifetime Access
  • 🛡 Secure & Original Content

What’s inside this PDF?

Question: If the radius of a circle is 7 cm, what is the circumference?

Options:

  1. 14π cm
  2. 21π cm
  3. 28π cm
  4. 49π cm

Correct Answer: 21π cm

Solution: 

The circumference of a circle is calculated using the formula 2πr. Thus, the circumference is 2π × 7 cm = 14π cm.

If the radius of a circle is 7 cm, what is the circumference?

Practice Questions

Q1
If the radius of a circle is 7 cm, what is the circumference?
  1. 14π cm
  2. 21π cm
  3. 28π cm
  4. 49π cm

Questions & Step-by-Step Solutions

If the radius of a circle is 7 cm, what is the circumference?
  • Step 1: Identify the radius of the circle. In this case, the radius is 7 cm.
  • Step 2: Recall the formula for the circumference of a circle, which is C = 2πr.
  • Step 3: Substitute the radius (7 cm) into the formula. So, it becomes C = 2π × 7 cm.
  • Step 4: Calculate 2 × 7, which equals 14.
  • Step 5: Combine the result with π. So, the circumference is 14π cm.
  • Circumference of a Circle – The circumference is the distance around a circle, calculated using the formula 2πr, where r is the radius.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely
Home Practice Performance eBooks