A circle has radius 7. What is its area in terms of π?

A circle has radius 7. What is its area in terms of π?

• A. 14π
• B. 49π
• C. 36π
• D. 7π

Answer: (B)

Area of a circle is found using A = πr^2. With a radius of 7, you square the radius: 7^2 = 49. Multiply by π to get 49π. So the area is 49π square units. The other values would come from different radii: 14π would come from r = √14, 36π from r = 6, and 7π from r = √7. Since the radius here is 7, the correct area is 49π.

Area of a circle is found using A = πr^2. With a radius of 7, you square the radius: 7^2 = 49. Multiply by π to get 49π. So the area is 49π square units. The other values would come from different radii: 14π would come from r = √14, 36π from r = 6, and 7π from r = √7. Since the radius here is 7, the correct area is 49π.