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25-11-2019
Mathematics

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If you doubled the surface area of a sphere how would the surface area change

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Bej1500 Bej1500

25-11-2019

If r is the radius of a sphere its surface area = 4(pi)r^2. If the radius is doubled then its surface area = 4(pi)(2r)^2 = 4*4(pi)r^2. So the surface area becomes 4-fold or the increase in surface area is 300%.

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