Two circles are concentric. A central angle forms an arc on both circles. The length of the arc on the smaller circle is 21 in, and the length of the arc on the larger circle is 51 in. If the larger circle has a radius of 11 in, then what is the radius of the smaller circle? 4.5 cm 16.9 cm 20.4 cm 8.3 cm
Two circles are concentric. A central angle forms an arc on both circles. The length of the arc on the smaller circle is 21 in, and the length of the arc on the larger circle is 51 in. If the larger circle has a radius of 11 in, then what is the radius of the smaller circle? 4.5 cm 16.9 cm 20.4 cm 8.3 cm
Two circles are concentric. A central angle forms an arc on both circles. The length of the arc on the smaller circle is 21 in, and the length of the arc on the larger circle is 51 in. If the larger circle has a radius of 11 in, then what is the radius of the smaller circle? 4.5 cm 16.9 cm 20.4 cm 8.3 cm
Two circles are concentric. A central angle forms an arc on both circles. The length of the arc on the smaller circle is 21 in, and the length of the arc on the larger circle is 51 in. If the larger circle has a radius of 11 in, then what is the radius of the smaller circle?
4.5 cm
16.9 cm
20.4 cm
8.3 cm
Two-dimensional figure measured in terms of radius. It is formed by a set of points that are at a constant or fixed distance from a fixed point in the center of the plane. The parts of the circle are circumference, radius, diameter, chord, tangent, secant, arc of a circle, and segment in a circle.
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