Which of the following is the best translation of this equation?
It is the equation of a circle with radius of 6 and its center at the origin.
Since the area equals pi times the square of the radius, the radius must be the square root of (the area divided by pi). I got that by dividing both sides of the equation by pi then taking the square root of both sides.
Half the square root of the square radius equals the circle radius.
A = 50.27 square units.
You are describing a circle, with its center at the origin and a radius of 4 (the square root of 16)
The inner circle is x2 + y2 = 4. The radius of the inner circle is the square root of 4, which is 2. To find the radius of the outer circle, multiply 2 times 4. The radius of the outer circle is 8. Square 8 (82 or 8 x 8) to find the number to put into the equation of the outer circle. This is 64. The equation for the outer circle is x2 + y2 = 64.
volume = p*radius2*height make the radius the subject of the formula: radius = the square root of (volume/pi*height) radius = the square root of (2826/pi*36) radius = 4.998732446cm So the radius is 5cm to the nearest cm.
Area of a circle equals pi r2 Therefore the radius of a circle equals the square root of (area divided by pi).
A circle with a radius of 5.1 inches has an area of 81.71 square inches.
A single equation such as the one in the question cannot be solved.
Albert Einstein.
The area of a circle is given by: pi multiplied by the square of the radius. So if the radius is 15, the area is 225pi (225 is 15 squared)