If r=4 then r (4) x 2 x Pi (3.14) = circumference (about 25.13)
The circumference of every circle is its diameter multiplied by (pi). For (pi), use 3.142 or 22/7 .
If you are given the radius of the circle, you can use the formula: diameter = 2*radius If you are given the circumference of the circle, you can use the formula: diameter = circumference/pi
echo -n "Enter the radius of a circle : "read r# use formula to get itarea=$(echo "scale=2;3.14 * ($r * $r)" | bc)# use formula to get itd=$(echo "scale=2;2 * $r"|bc)circumference=$(echo "scale=2;3.14 * $d"| bc)echo "Area of circle is $area"echo "Circumference of circle is $circumference"# ### softspy88@gmail.com
echo -n "Enter the radius of a circle : "read r# use formula to get itarea=$(echo "scale=2;3.14 * ($r * $r)" | bc)# use formula to get itd=$(echo "scale=2;2 * $r"|bc)circumference=$(echo "scale=2;3.14 * $d"| bc)echo "Area of circle is $area"echo "Circumference of circle is $circumference"
The area of a circle with a circumference of 9.42 inches is: 7.06 square inches.
If you mean 3.14 for pi then the circumference is: 7*3.14 = 21.98 cm
circumference of a circle = pi * diameter.
Circumference of a circle = 2*pi*radius or pi*diameter
Multiplying the diameter by pi (approx 3.1416) will give you the circumference of the circle.
The area of a circle with radius r is pi*r*r and its circumference is 2*pi*r Use the first to find r and then use that value of r in the second to find the circumference.
if it is the radius you can find area or circumference
Circumference of a circle = pi*diameter or 2*pi*radius
Use the standard formula for the area of a circle to find out the circle's radius. Then multiply that by 2 x pi, to get the circumference.
Tells you the answer is 2*sqrt(314*pi) inches, which is approximately 62.82 inches Seriously though. Use metric units in maths it makes everything just work!
people use pi to find the circumference of a circle.
The circumference of every circle is its diameter multiplied by (pi). For (pi), use 3.142 or 22/7 .
A good strategy is to use whatever you do know about the circle, along with anyformula that relates the information you do have to the circumference of a circle.