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Earn +20 ptsQ: What is the area of a circle with a diameter of 5 cm?
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What is the area of a circle if the radius is 5 cm?
The area of a circle, if the radius is 5 cm, is: 78.54 cm2
What is the radius of a circle with a 10cm diameter?
Radius = diameter/2 = 5 cm
What is the radius of a circle with the area 25 pi cm squared?
Well, darling, if the area of the circle is 25π cm², then we can use the formula A = πr² and plug in the area to solve for the radius. So, 25π = πr², which means the radius is 5 cm. Voilà, problem solved!
If a circle's radius is 2.5 inches what is its diameter?
The diameter is double the radius of a circle. So you get 5 inches for the diameter.
What is the area and circumference of a small circle 10 inches in diameter?
Area = Pi multiplied by the radius squared Circumference = Pi multiplied by the diameter r = 10 in./2 = 5 in. A = (3.1415)(5 in.)(5 in.) = 78.54 in.2 C = (3.1415)(10 in.) = 31.42 in. Therefore, a small circle with a diameter of 10 inches has an area of about 78.54 inches squared and a circumference of about 31.42 inches.
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