The radius is 12
I can see no diagram.
If you mean a circle, use the formula for the area of a circle: A = pi x r2.
Find the area of the shaded sector. radius of 3 ...A+ = 7.07
90 degrees. QED.
The radius is 8 feet.
The radius is 12
The radius is a lenght, and it's impossible to find out the radius if you don't give any information about the size of your circle.
25%. 45 degrees. Radius.
circumference of a circle = 2*pi*radius or pi*diameter
Circumference = 2*pi*radius or circumference/2*pi = radius 90 inches/2*pi = 14 inches in radius =======================
I can see no diagram.
Using 3.14 as Pi the area of circle is: 6358.500000000001
A tangent is always perpendicular to the radius of a circle. A radius is a straight line going from the center of the circle to the circumference (edge) of the circle. A tangent is a straight line outside the circle that touched the circle at one (and only one) point. When a tangent touches the outside edge of the circle at the same point where a radius touches the edge of the circle, the angle between the radius and tangent line is 90 degrees meaning they are perpendicular.
If you mean a circle, use the formula for the area of a circle: A = pi x r2.
From your question, we can't tell whether [ 64 pi ] is the area of the circleor the sector.The area of a circle is [ pi R2 ].If [ 64 pi ] is the area of the circle, then the radius is [ 8 ], and we don't careabout the sector.If [ 64 pi ] is the area of the sector, then the area of the full circle is [ 256 pi ](because the 90-degree sector is 1/4 of the circle), and the radius is [ 16 ].
Well a circle has 360 degrees so a sector of 90 degrees has an area equal to 90/360 (or 1/4) of a circle with the equivalent radius. The area of a circle is defined as PI*Radius^2 so the area of a 90 degree sector will be 1/4*PI*Radius^2. The area will be 1/4*3.14*10^2 or 78.5 in^2.