divide by pi and take the square root
A=(pi)(r^2)
Multiply by 2 ! A radius is half a diameter !
Circumference of a circle: 2 x pi x radius.
1407.43 units2
Radius = circumference/pi
You don't need to find it. From what your question states the area is already given to you.
To find diameter, multiply raduis by two.
Multiply by 2 ! A radius is half a diameter !
Radius (not raduis) =circumference/(2*pi)
Circumference of a circle: 2 x pi x radius.
Divide the area by pi. (3.14 or 22/7) Find the square root of your answer. This will be the radius. Multiply the raduis by 2.
Assuming that raduis = radius, the total surface area is 132 square units.
Area of a circle = pi*radius2
Assuming that cirlce = circle and raduis = radius, the answer is 452 sq metres.
Surface area = 4*pi*r^2 so r = sqrt[Area/(4*pi)]
Assuming that shere = sphere and raduis = radius, the answer is 942 square units.
113.09734 square inches
You cannot.A circle has no mass nor volume and so the concept of density is not appropriate.Also, the word is radius, not raduis!