Question: 2. What volume of material remains from a solid sphere of radius 2r after drilling a hole of radius r through the center? Explain whether

2. What volume of material remains from a solid sphere of

2. What volume of material remains from a solid sphere of radius 2r after drilling a hole of radius r through the center? Explain whether you are using the disc or shell method and why you chose the way you did. Sketch a representative cross-section. 3. What is the surface area of the solid piece that remains (the one whose volume you computed) in problem 2. Carefully explain your solution

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