Question

Диаметр круглой арены в цирке равен 13 м. Вычисли площадь и длину окружности цирковой арены. Заранее спасибо))

Answer 1

S=pi*d^2/4=132,665 м2
L=pi*d=40,82 м

Answer 2

Calculation of the Area and Circumference of the Circus Arena

To calculate the area and circumference of a circular arena, we need to know the diameter of the arena. In this case, the diameter of the circular arena is given as 13 meters.

1. Calculation of the Area: The area of a circle can be calculated using the formula: A = π * r^2, where A represents the area and r represents the radius of the circle. Since we have the diameter, we can find the radius by dividing the diameter by 2.

Given that the diameter of the circular arena is 13 meters, the radius can be calculated as follows: radius = diameter / 2 = 13 / 2 = 6.5 meters

Now, we can calculate the area using the formula: A = π * r^2 = 3.14 * 6.5^2 = 132.665 square meters

Therefore, the area of the circular arena is approximately 132.665 square meters.

2. Calculation of the Circumference: The circumference of a circle can be calculated using the formula: C = 2 * π * r, where C represents the circumference and r represents the radius of the circle.

Given that the radius of the circular arena is 6.5 meters, we can calculate the circumference using the formula: C = 2 * π * r = 2 * 3.14 * 6.5 = 40.82 meters

Therefore, the circumference of the circular arena is approximately 40.82 meters.

Please note that the values of π and the resulting area and circumference are approximate due to rounding.

I hope this helps! Let me know if you have any further questions.