the formula for the area of a circle is (pi)r2
(pi)r2=28m 28/pi = 28/pi
r2 = 28/pi
r= (28/pi)1/2
the formula for circumference is c=2(pi)r c = 2(pi)(28/pi)1/2
c = 18.7578884...m
Circumference : 94.2 meters Area : 706.5 square meters
Circumference = 18.85 metres Area = 28.27 square metres.
The largest pen you can make is a circle with a circumference of 100 meters.Its diameter is 31.83 meters, and its area = 795.77 square meters.It's a lot easier to just go with a square ... the largest area you can make with straight sides.Use the 100 meters of fence to enclose a (25 x 25) square. The area is 625 square meters.
You can use the formula for the area of a circle, and solve for the radius. Then you can multiply the radius times 2 x pi, to get the circumference.
If the floor area is 313 square meters, then the floor area is 313 square meters.
The area of a circle with a circumference of 1,000 meters is: 79,600 square meters.
The circumference is 18.76 meters.
Circumference : 94.2 meters Area : 706.5 square meters
The circumference is 3.544 meters.
Circumference = 18.85 metres Area = 28.27 square metres.
The area is 113 m2
The largest pen you can make is a circle with a circumference of 100 meters.Its diameter is 31.83 meters, and its area = 795.77 square meters.It's a lot easier to just go with a square ... the largest area you can make with straight sides.Use the 100 meters of fence to enclose a (25 x 25) square. The area is 625 square meters.
Area = 30099 square metres pi*radius2 = 30099 r2 = 30099/pi r2 = 9580.809264 r = square root of 9580.809264 r = 97.88160841 Circumference = 2*pi*radius C = 2*pi*97.88160841 C = 615.0082838 metres Therefore the circumference of the circular park is 615 metres corrected to three significant figures.
First we have to find the radius: pi*radius2 = 400*pi square meters Divide both sides by pi and then square root both sides: radius = 20 meters 2*pi*radius or pi*diameter = circumference 2*pi*20 = 40*pi meters
You can use the formula for the area of a circle, and solve for the radius. Then you can multiply the radius times 2 x pi, to get the circumference.
If the floor area is 313 square meters, then the floor area is 313 square meters.
Please note that a circumference is a linear measurement (for example, meters), while area is an area measurement (for example, square meters), so the "equality" depends on the units used. Anyway, all you need to do is write the expression for the circumference, and the expression for the area, then put an equal sign in between - since the problem states that the two are equal. Then solve this equation.