The length of the curved part of the semicicle is π*d/2 where π is the transcendental number approximated by 3.14159 and d is the diameter.
The length of the straight part of the semicircle is, of course, d.
Divide circumference by pi, that gives diameter. Radius is half of diameter
pi X diameter finds the circumference so circumference divided by pi will leave the diameter. half the diameter to find the radius
The radius of a circle is half the diameter or half the circumference divided by pi (3.1416).
Divide the circumference by pi, and that will give you the diameter. Then take half of the diameter (the radius), and plug it into the formula for the area of a circle (A=πr²)
A circle with a diameter of 6 has a circumference of 18.85. Half of that is 9.425
Its perimeter is half of its circumference plus its diameter
It is half the circle's circumference plus its diameter.
it is the circumference divided by pi which = the diameter. the radius is half the diameter.
radius is half the diameter of a circle.
Let r be the radius of the circle. Then the perimeter of the half circle is pi*r + 2r. That is half of the circumference plus the diameter.
the equation for the circumference of a circle is 2*radius*pi, or since the radius is half of the diameter 2*radius=diameter, we can simplify the equation to the circumference of a circle=diameter*pi
The circumference is the distance AROUND a circle. The diameter is the distance ACROSS a circle. The radius is the the distance FROM THE CENTER of the circle (same thing as one-half of the diameter).