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(the radius is 14cm)
to find the radius of a sphere when given its surface area, you can use the following formula:
Surface Area of Sphere = 4πr^2
you have the surface area as 784π cm². so you can set up the equation like this: 784π = 4πr^2
now, solve for the radius (r):
divide both sides by 4π:
(784π) / (4π) = (4πr^2) / (4π)
196 = r^2
now, take the square root of both sides to find the radius:
r = √196
r = 14 cm !!