Question

Find the area of a circle whose radius is 7 cm.

• A. \( 49\pi \, \text{cm}^2 \)
• B. \( 14\pi \, \text{cm}^2 \)
• C. \( 49 \, \text{cm}^2 \)
• D. \( 154 \, \text{cm}^2 \)

Hint:

The area of a circle is calculated using the formula \( \pi r^2 \), where \( r \) is the radius.

Answer 1

The Correct Option is A

The formula for the area of a circle is: \[ \text{Area} = \pi r^2 \] Given that the radius \( r = 7 \, \text{cm} \), we can substitute the value into the formula: \[ \text{Area} = \pi \times (7)^2 = 49\pi \, \text{cm}^2 \] Thus, the area of the circle is \( 49\pi \, \text{cm}^2 \). Therefore, the correct answer is option (1).