The area of a circle, if the radius is 5 cm, is: 78.54 cm2
Radius = diameter/2 = 5 cm
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!
The diameter is double the radius of a circle. So you get 5 inches for the 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.
Around 19.634375 cm
Area of circle = 78.54 sq cm => Radius of circle = 5 cm => Diameter of circle = 10 cm => Side of square = 10cm => Area of square = 100cm2
10 cm; the diameter of a circle is twice its radius.
Area = pi x r2 = 3.142 x 5 x 5 = 78.55 sq cm
10 cm
cicumference = pi*5 cm area = pi*2.52 square cm
Area = Pi*d/22 = Pi*2.52 = approximately 19.63cm2
radius 5 cm diameter 10 cm
Using 3.14 as Pi the area of circle is: 78.5
Assuming a diameter of 5 inches.The area of this circle is: 19.63
10 cm (diameter is double the radius)
The radius of a circle is half the length of its diameter. Therefore, if the diameter of the circle is 10 cm, the radius would be half of that, which is 5 cm. The formula to find the radius of a circle is r = d/2, where r is the radius and d is the diameter.