The surface area of the balloon to the nearest square centimeter is 168cm^2.
To get the surface area of a sphere, we need to have the radius.
We are given the circumference.
The circumference formula is C=2πr.
We need to solve for r.
23 = 2πr
r=3.66
What is the surface area of the circle?
The surface area is A = 4πr^2.
Use the given values in the formula of the surface area.
A = 4π(3.66)^2
Solve for A.
A= 168 cm^2.
Therefore the surface area of the balloon to the nearest square centimeter is 168cm^2.
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