Question

Please help me:

1. The diameter of a circle is 8 inches. What is the area?
2.What is the area of a circle with a radius of 6 inches?
3.The diameter of a circle is 10 meters. What is the area of the circle?

Answer 1

The area of a circle can be calculated using the formula A = πr². For a circle with an 8-inch diameter, the area is 16π square inches. With a radius of 6 inches, the area is 36π square inches, and with a 10-meter diameter, the area is 25π square meters.

Step-by-step explanation:

Calculating the area of a circle involves using the formula A = πr², where A is the area and r is the radius of the circle. π (pi) is approximately 3.14159.

1. If the diameter of a circle is 8 inches, the radius (r) is half of that, which would be 4 inches. The area A of the circle would be π(4 inches)² = 16π square inches.

2. For a circle with a radius of 6 inches, the area would be π(6 inches)² = 36π square inches.

3. When the diameter of the circle is 10 meters, the radius is 5 meters. The area A would then be π(5 meters)² = 25π square meters.

Answer 2

1. d=8, r=4
4×4×π=16π=50.24
a = 16π or 50.24
2. r=6
6×6×π=36π=113.04
a = 36π or 113.04
3. d=10 r=5
5×5×π=25π=78.5
a = 25π or 78.5