half pi = 1.57079633
Pi is a unitless number, not a distance. Pi is a ratio it has no dimensions. Pi is the ratio of the circumference of a circle to its diameter.
well i think it will be the opposite of pi
Divide the circumference by pi. Pi is approximately 3.14.
You divide the circumference by pi or 3.14.
Pi
it is pi..... wait no it isnt.....pi squared to the one half power is not pi...
half pi is 1/2 x 3.14 = 1.57
-1.5 = -0.4775 pi (rounded)
The volume of a sphere is [ 4/3 pi R3 ], so half of it is [ 2/3 pi R3 ]= (2/3) (pi) (103) = 2,000/3 pi = 2,094.395(rounded)
3.385137501 this is true, I did it on my calculator!
Volume of sphere = 4/3*pi*r3 So volume of half a sphere = 2/3*pi*r3= 2/3*pi*103 = 2000*pi/3 = 2094.4 cubic units
Find the area and perimeter of the full circle, then throw away 1/2 of each.Perimeter (circumference) of a circle = (pi) times (diameter).For a half circle, it's (1/2 pi) times (diameter)Area of a circle = (pi) times (radius)2For a half circle, it's (1/2 pi) times (radius)2
This is the equation of a semi-circle, or a half circle.
they figured it out by getting the circummference and cutting it in half to figure out the diametre of a circle aka(pi
The volume of a sphere is 4/3 x pi x r3 Half of that is 2/3 x pi x r3
To find the area of half a circle, use the formula for a circle pi*r^2 divided by 2. pi = 3.14, r = radius (half the distance across the circle)
Surface area of half a sphere = 2*pi*radius2 Surface area = 200*pi = 628.3185307 square units.