The area of a circle with radius 7 cm is:

The area of a circle with radius 7 cm is:

• A. 21π cm^2
• B. 49π cm^2
• C. 14π cm^2
• D. 98π cm^2

Answer: (B)

The area of a circle is found using A = π r^2, which shows the area grows with the square of the radius. With a radius of 7 cm, you square the radius: 7^2 = 49. Then multiply by π to get the area: 49π cm^2. This is the correct result because it directly applies the formula to the given radius. The other numbers would come from incorrect use of the radius or mixing up diameter with radius, since they would require a different r^2 value than 49.

The area of a circle is found using A = π r^2, which shows the area grows with the square of the radius. With a radius of 7 cm, you square the radius: 7^2 = 49. Then multiply by π to get the area: 49π cm^2. This is the correct result because it directly applies the formula to the given radius. The other numbers would come from incorrect use of the radius or mixing up diameter with radius, since they would require a different r^2 value than 49.