Question

Find the area of a circle with radius 7 cm.

• A. \( 154 \, \text{cm}^2 \)
• B. \( 49 \, \text{cm}^2 \)
• C. \( 22 \, \text{cm}^2 \)
• D. \( 44 \, \text{cm}^2 \)

Hint:

Remember: The area of a circle is \( A = \pi r^2 \), and \( \pi \approx 3.14 \).

Answer 1

The Correct Option is A

Step 1: Use the formula for the area of a circle
The area \( A \) of a circle is given by the formula: \[ A = \pi r^2 \] where: - \( r \) is the radius of the circle, - \( \pi \approx 3.14 \).
Step 2: Substitute the given radius
Given: - Radius \( r = 7 \, \text{cm} \). Substitute \( r = 7 \) into the formula: \[ A = 3.14 \times (7)^2 = 3.14 \times 49 = 154 \, \text{cm}^2 \]
Answer:
Therefore, the area of the circle is \( 154 \, \text{cm}^2 \). So, the correct answer is option (1).