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Earn +20 ptsQ: What is the radius of circle with A 169 pi in 2?
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What is the circumference of a circle with an areaf 169 pi square centimeters?
pi*radius2 = 169*pi Divide both sides by pi then square root both sides to find the radius: radius = 13 and 2*13 = a diameter of 26 cm
What the formula in circle?
Area of a circle = pi*radius squared Circumference of a circle = 2*pi*radius or diameter*pi
What is the formula for finding the radius of a circle when you have the perimeter?
2*pi*radius = perimeter or circumference of a circle radius = circumference/2*pi
What is the circumference of a circle with radius 5x?
Circumference of a circle = 2*pi*radius or diameter*pi
How do I measure different parts of a circle?
Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius squared Radius of a circle = diameter/2 Degrees around a circle = 360 degrees
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