Using 3.14 as Pi the area of circle is: 7539.14
r = 7
The area of the circle is(17,640)/(the number of degrees in the central angle of the sector)
Equation of circle: (x-2)^2 +(y+9)^2 = 49
(x - 0)2 + (y - 0)2 = 49
Equation of circle: (x+2)^2 +(y+3) = 49
Circumference: 14*pi mi Area: 49*pi square mi
What measurement of the circle is equal to 49 inches? is it the radius?, the area?, the circumference? Without further information this question can not be answered satisfactorily.
Circumference of circle: 2*pi*7.8 = 49 meters rounded
The circumference of a circle is calculated using the formula C = 2πr, where C is the circumference, π is the mathematical constant pi (approximately 3.14159), and r is the radius of the circle. In this case, since the diameter of the circle is given as 49 inches, the radius would be half of the diameter, which is 24.5 inches. Plugging this value into the formula, the circumference of the 49-inch circle would be approximately 154.06 inches.
You need just a smidgen of algebra.The area of any circle is (pi) x (radius)2 .For this circle, you know that (pi) x (radius)2 = 49.You can massgae this around to find the radius, and thenthe circumference is just (2 pi) x (radius).If you need it all in one step, then Circumference= 2 x sqrt(pi x Area) ,but the other way is easier for me, because I don't have to memorizeanother formula. I find deriving easier than memorizing..
98pi ie 307.9m to one significant figure
r = 7
Using 3.14 as Pi the area of circle is: 153.86
Since the area of a circle is pi times the radius squared. The radius is 7. The diameter would be 14.
A=pi r^2 A=(3.14)(7^2) A=(3.14)(49) A=153.86 feet
C = 2 * pi * r = 14 pi = 43.96 inches A = pi * r^2 = 3.14 * 49 = 153.86 square inches
Circ = 14 pi in, area = 49 pi sq in.