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Earn +20 ptsQ: What does the R mean in pie R squared?
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What is the surface area of half a sphere?
its 2 pie r squared BUT you have to add back the base (a circle) which is pie r2 The original formula is 4 pie r squared Your new formula is (2 pie r squared + pie r squared)
What is the rule for pie r squared?
Area of a circle = pi*radius2
Why is it pie r squared is the exactly formula for circumference?
It isn't. That is the formula for the AREA of a circle!
What is the area of a circle that has a radius of 4?
PIE r squared 3.142 X 42 = 50.24
How do you calculate the area of circle?
Area: (pi)(r)2
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