In order to know that the circumference of a square is equal to that of a circle, the side length of a square is 6.28 cm, and the circumference of the circle is () cm? The area is () square centimeter?

In order to know that the circumference of a square is equal to that of a circle, the side length of a square is 6.28 cm, and the circumference of the circle is () cm? The area is () square centimeter?

The circumference of a circle is
6.28 * 4 = 25.12cm
The circle radius is 25.12 / (3.14 * 2) = cm
The area is
3.14 * 4 * 4 = 50.24 square centimeter

It is known that the circumference of a square is equal to that of a circle. If the side length of a square is 6.28 cm, then the circumference of a circle is () cm and the area is () square centimeter

twenty-five point one two
fifty point two four

Given that the circumference of a square and a circle are equal, then the area ratio of a square to a circle is (), the area of a square is 314 square centimeters, and the area of a circle is () square centimeters

Suppose the side length of a square is a
Circle radius r
So we have 4A = 2 * pi * r
a=pi*r/2
Sa=a^2=pi^2*r^2/4=pi/4*(pi*r^2)=pi/4*Sr
Sa/Sr=pi/4
Square area 314 if Pi is 3.14, then the circle area is 400

The circumference of a square is equal to that of a circle. It is known that the side length of a square is 4.71cm. What is the area of the circle?

Because the circumference of a square is equal to the circumference of a circle
Square perimeter = 4 * 4.17 = 18.84cm
Because the circumference of the square = the circumference of the circle = 18.84cm
Because the circumference of the circle is 2 π R
π is about 3.14
So r = circumference of the circle △ 2 △ PI
So r = 18.84 △ 2 △ 3.14 = 3cm
Because the area of the circle = π RR
So the area of the circle is 3.14 * 3 * 3 = 28.26 square centimeters

① If the circumference of a square is equal to that of a circle, what is the area ratio of a square to a circle? ② If the area of the square is 314 square centimeters, then the area of the circle is______ Square centimeter

① Let the perimeter of them be s,
Then the side length of the square is s
The area is equal to (s)
4)2，
The radius of the circle is s
2 π, the area is equal to π x (s)
2π)2，
On (s)
4)2：π×(s
2π)2=π：4．
②314×4÷π
=1256÷3.14，
=400 (square centimeter)
A: ① the area ratio of the square to the circle is π: 4; ② the area of the circle is 400 square centimeters

The circumference of a square with an edge of 8 cm is equal to that of a circle. The area of the circle is 32 divided by 3.14 is not enough!

I can't get rid of it
Denoted by π
Circumference
=π*2R
The circumference of a square with an edge of 8 cm is equal to that of a circle
∴π*2R=8*4
R=16/π
The area of the circle = π r? = π (16 / π)? = 256 / π ≈ 81.53
If you agree with my answer, please click "accept as satisfactory answer", thank you!

Draw the largest circle in a square with a circumference of 40 cm. What is the circumference and area of the circle?

The diameter of the largest circle is equal to the side length of the square, which is 40 / 4 = 10 cm
Its radius = 10 / 2 = 5 cm
Its circumference = 10 * 3.14 = 31.4cm
Its area = 3.14 * 5 * 5 = 78.5 square centimeter

Draw the largest circle in a square with a side length of 4cm. How many centimeters is the circumference of the circle?

The diameter of the circle is 4cm. The circumference = 2 π * r = 4 * π = 4 * 3.14 = 12.56cm

Draw the largest circle in a square with an area of 900 square centimeters. Why is the circumference of this circle 30 centimeters

You're wrong. The diameter of the circle is 30cm, not the circumference
The longest inscribed circle is the longest

The PI is the ratio of () to () of a circle, expressed in letters ()

PI is the ratio of circumference to diameter of a circle, expressed by the letter (π);