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Mathematics 7 Online
OpenStudy (anonymous):

Janine inflated 1 ball to a radius of 18 cm and another ball to a radius of 12 cm. How much more air was in the larger ball? Use 3.14 to approximate pi and enter your answer to two decimal places.

OpenStudy (mathstudent55):

Assuming the balloons have the shape of spheres, you need to find the volumes of two spheres. Do you know the formula for the volume of a sphere?

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