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Using the simple approximation above calculate the surface area of a sphere with a radius of 7 meters?
Wiki User
∙ 7y ago
The surface area of a sphere with radius R m is 4*pi*R^2 so, in this case, the exact value would be 196*pi. Use the given estimate for pi - which is not visible to us since there is no "above" that is visible.
Wiki User
∙ 7y ago
Wiki User
∙ 7y agoFor example, you may want to approximate pi as 3. That will allow you to do the calculation in your head - especially if you also round the square of 7.
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