Question

The area of a circle whose radius is 7 cm will be in square cm:

• A. \( 7\pi \)
• B. \( 7 \times 7\pi \)
• C. \( 7 \times 7 \times 7\pi \)
• D. \( 7 \times 7 \times 7 \times 7\pi \)

Hint:

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

Answer 1

The Correct Option is B

Step 1: Formula for Area of a Circle. 
The area of a circle is calculated by the formula: \[ \text{Area} = \pi \times \text{radius}^2 \] For a circle with a radius of 7 cm, the area will be: \[ \text{Area} = \pi \times 7^2 = 7 \times 7\pi \] Step 2: Verifying the Options. 

- Option (1): \( 7\pi \) is incorrect, as the area formula involves squaring the radius. 
- Option (2): \( 7 \times 7\pi \) is correct. 
- Option (3): \( 7 \times 7 \times 7\pi \) is incorrect. 
- Option (4): \( 7 \times 7 \times 7 \times 7\pi \) is incorrect. 
Conclusion: 
Therefore, the correct answer is (2) \( 7 \times 7\pi \).