you are struggling with the same things i did
here is some stuff that will help you a lot
circumfrince=diameterX pie (3.14) so 5 x 3.14= 15.7
and then to find the area it is
3.14X radius x radius = area
radius = diameter divided by 2
so 2.5x2.5X3.14= 19.625
i hope this helped you because i know it helped me a lot
The formula for the circumference of a tree is Diameter * PI. If the circumference is known, then the diameter is equal to the circumference / PI. In this case, the diameter is equal to 5 foot 5.29 inches.
Since the circumference is equal to the diameter times pi, you need to divide the circumference by pi in this case.
Circumference Equals Diameter times Pi C = D x π D = 5 C = 5 x π C = 5π² or 15.7ft²
The equation for determining the circumference of a circle is circumference = pi x diameter. So if the diameter is 5, then the circumference is pi * 5 = 15.71
If a circle has a diameter of 5 the circumference is: 31.4
Circumference = pi*diameter So diameter = circumference/pi = 1.59 units
Circumference of a circle is 2*pi*radius or pi*diameter. Therefor, if the circumference of the table is 15.7 cm then its diameter is 15.7/pi = 4.9975 cm or roughly 5 cm. So the circumferences and diameters of the table and its leg are equal.
diameter = 5/pi
Circumference = n (pi) x diameter The diameter always equals 2 x radius. So the diameter of this circle is 5. Multiply by pi. 5 x 3.142.. = 15.7 to the nearest decimal place
the diagonal of the rectangle will be the diameter of the circle which equals 5 so the circumference will be 5pie or 15.70units.
diameter = 5/pi
pi * 5 = 15.7079633 Circumference = pi * Diameter