As tan(x)=sin(x)/cos(x) and sin(pi/4) = cos(pi/4) (= sqrt(2)/2) then tan(pi/4) = 1
1 over 2 divided by 1 over 4 is 2.
A = C^2/(4 pi) The area of the circle is... The circumference squared... divided by 4... divided by pi If you already know the area, then you can multiply it by 4*pi, and then the square root of the product is equal to the circumference! C = (A*(4 pi))^(1/2)
1
5 divided by 1 is 5. 1 over 4 is a quarter. 5 divided by 1¼ is 5 divided by 5/4, which is 5 time 4/5, that is 4.
28
tangent of pi/4 = 1
4
As tan(x)=sin(x)/cos(x) and sin(pi/4) = cos(pi/4) (= sqrt(2)/2) then tan(pi/4) = 1
1 over 2 divided by 1 over 4 is 2.
A = C^2/(4 pi) The area of the circle is... The circumference squared... divided by 4... divided by pi If you already know the area, then you can multiply it by 4*pi, and then the square root of the product is equal to the circumference! C = (A*(4 pi))^(1/2)
1
5 divided by 1 is 5. 1 over 4 is a quarter. 5 divided by 1¼ is 5 divided by 5/4, which is 5 time 4/5, that is 4.
4 times pi times 4 divided by 2 is 78.9568352087
0.75
1/16
4/5 divided by 1/8 is 6.4