5 because the radius is half of the diameter
5.
Five feet (r = d/2).
A circle that is ten feet in diameter has a circumference of (approximately) 31.4 feet.
20 cm
The area of a sector of a circle that has a diameter of ten inches if the length of the arc is ten inches is: 25 square units.
The two equations you must know to solve this are The circumstance of a circle is the value of pi times the diameter c=pi*d -and- The radius of a circle is halve the diameter r=.5d or d=2r If we plug in 62.8 for c, 2r for d and 3.14 for pi, the equation becomes 62.8=3.14*2r Divide by 3.14 20=2r Divide by 2 10=r the radius is ten meters
1.9 and the diameter is ten
If ten inches is the diameter, the circumference is 31.4159 inches.
78.5398163 meters.
The circumference of a circle if the diameter is 10 feet long is: Pi x 10 (about 31.416).
pi is the square root of ten ---------- Incorrect. Pi is the mathematical ratio between the circumference and the diameter of a circle. Coincidentally, it is also the ratio between the area of a circle and the square of its radius. The square root to 10 is ~3.16227766, while Pi is ~3.1415926535897932