Question

Найдите с точностью до 1м площадь арены цирка,зная,что во всех цирках мира длина окружности арены равна 40,8 м

Answer 1

(40.8+40.8)=1616 $=40.8*2=41.6

Answer 2

Calculation of the Circus Arena Area

To find the area of the circus arena with an accuracy of 1m, we can use the information that the circumference of the arena in all circuses worldwide is equal to 40.8m.

The formula to calculate the area of a circle is given by:

A = π * r^2

where A is the area and r is the radius of the circle.

To find the radius, we can use the formula for the circumference of a circle:

C = 2 * π * r

Given that the circumference of the arena is 40.8m, we can rearrange the formula to solve for the radius:

40.8 = 2 * π * r

Dividing both sides of the equation by 2π, we get:

r = 40.8 / (2 * π)

Now we can substitute the value of r into the formula for the area:

A = π * (40.8 / (2 * π))^2

Simplifying the equation, we have:

A = (40.8 / (2 * π))^2

Calculating the value, we find:

A ≈ 138.72 square meters.

Therefore, the approximate area of the circus arena is 138.72 square meters.

Please note that this calculation assumes the arena is a perfect circle and that the given circumference is accurate.