the answer would be ,78.50 first you multiply 5x5 then you time that by 3.14 see look, 5 x 5 = 25 3.14 x 25 = 78.50
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The area of a circle (to the nearest hundredth) with a 5-unit radius is: 78.54 square units.
78.53.14 * 5 * 5
Just like any other circle, the area of that one is (pi) times (the square of the radius).
The area of a circle with radius 5 is 25 pi. Concentric circles with radius 3 and 4 have areas of 9 pi and 16 pi. The concentric circle with radius four consumes the circle with radius 3. 25 pi minus 16 pi leaves 9 pi of the circle with radius 5 left over. 16 pi is slightly over three-fifths of the circle with radius 5.
A circle with an area of 100 square miles has a radius of 5.6418 miles. Or, 5 miles, 1,129 yards, 1 foot, 8.5 inches - more or less.