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A = pi r2
r2 = A/pi
r2(1/2) = (A/pi)1/2
r = (120/pi)1/2
r ≈ 6 in

C = 2 pi r
C = (2)(pi)(6 in)
C ≈ 37.7 in

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Q: The area of a circle is 120 inches what is its circumference?
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What is area to the nearest tenth of a 120 degree sector of a circle with radius of 8 ft?

Area of whole circle = pi*r2 = 64*pi Area of Sector = Area of Whole Circle * Angle of Sector/Angle of Whole Circle = Area of Whole Circle * 120/360 = Area of Whole Circle / 3 = 64*pi/3 = 67.0 to the nearest tenth.


If the radius of a circle with an area of 120 mm squared is multiplied by 3 what is the area of the new circle?

In ratios, the ratios of areas is the square of the ratio of sides. Consider the original circle and the new larger circle formed by multiplying its radius (length) by 3: The circles have lengths in the ratio 1 : 3 → the circle have areas in the ratio 1² : 3² = 1 : 9 → The larger circle's area is 9 × 120 mm² = 1080 mm²


A central angle measuring 120 degrees intercepts an arc in a circle whose radius is 6. What is the area of the sector of the circle formed by this central angle?

The area of the sector of the circle formed by the central angle is: 37.7 square units.


What is the length of arc AB if the central angle is 120 degrees and the radius is 10?

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How do you shade 2 thirds of a circle?

To shade two-thirds of a circle, you first need to understand that a full circle represents 360 degrees. Two-thirds of a circle would then be 240 degrees (2/3 * 360 = 240). To visually represent this shading, you can start by drawing the full circle. Then, mark off 240 degrees of the circle, starting from any point on the circumference, and shade the area within those markings to represent two-thirds of the circle.