PART 1: Johann has a fascination with spheres, and he wants to decorate his home

Question

PART 1: Johann has a fascination with spheres, and he wants to decorate his home with large, brightly colored balls. He has five solid wood spheres that have a radius of 0.5 meters. He knows that it takes 1 pint of paint to coat each sphere. A friend has offered Johann three larger spheres of the same type; these spheres have a radius of 1 meter. How much paint will it he need for each of the larger spheres?

PART 2: Also, each of Johann's small spheres weighs 48 pounds. Johann can comfortably lift 45 kilograms. He assumes he will have no difficulty carrying the larger spheres up to the second floor deck over looking the bay. How much will the bigger spheres weigh?

Steps included please!

Thanks!

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PART 1: Johann has a fascination with spheres, and he wants to decorate his home

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