Find the area of a circle whose diameter is 12 cm Find the area of a circle whose diameter is 2 times

Find the area of a circle whose diameter is 12 cm Find the area of a circle whose diameter is 2 times less than the diameter of 1 circle.

1) 12: 2 = 6 centimeters – the radius of the circle; 2)) the formula for finding the area of a circle looks like this: S = pi * r squared. Where pi is a constant number equal to 3.14 (rounded to the nearest hundredths), r is the radius of the circle. Substitute 6 centimeters in the formula instead of the radius and find the area of the circle. We get: S = pi * 36 = 36 * 3.14 = 113.04 square centimeters; 3) 6: 2 = 3 centimeters – the radius of the second circle; 4) We get: S = pi * 9 = 9 * 3.14 = 28.26 square centimeters; Answer: 113.04 square centimeters; 28.26 square centimeters.