Game2

What is the ratio between diameters and circumference in a circle?

• 1:π

• π:2

• 1:2

• 2:7

Which

of the following statements about the area of the circle are correct?

• S=3r^2

• S=πr^2

• S=4r^2

• S=2πr^2

Which

of the following statements about the volume of a sphere are correct?

• V=πr^3

• V=2πr^3

• V=3/4*πr^3

• V=4/3*πr^3

Which of the following statements are correct?

• π=3.14

• cos π = 1

• e^iπ+1=0

• π=√10

• 1

• 2/π

• 1/2

• √π

• =π

• =2/π

• =1

• =0

• =π/2

• =1/π

• =1

• =1/2

• =3/2

• =π/2

• √10/2

• =π^2/6

What is the volume of a cone

• 1/3*pi*r^3*h

• 1/3*pi*r^2*h

• 1/2*r^2*h

• 1/2*r^3

1+1=

• 2sin(pi/2)

• 1+1*1-2

• cos(2pi)^3

• sin(x)/2n