Final answer:
The circumference of the circle whose center is a fully inflated professional basketball is 78 cm.
Step-by-step explanation:
To find the circumference of a circle whose center is a fully inflated professional basketball, we can use the formula for circumference, which is given by 2πr, where r is the radius of the circle. Since the basketball has a circumference of 78 cm, we can find the radius by dividing the circumference by 2π. So, the radius is 78 / (2π) cm. To find the circumference of the circle whose center is the basketball, we can multiply the radius by 2π, which gives us (78 / (2π)) * 2π cm. Simplifying this expression, we get 78 cm. Therefore, the circumference of the circle whose center is the basketball is 78 cm.