# Measurement, Uncertainty and Significant Figures

a) What is the area, and its approximate uncertainty, of a circle of radius

3.4*10^4 cm?

b) What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is r=2.86 +/- 0.09m?

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a) What is the area, and its approximate uncertainty, of a circle of radius 3.4*10^4 cm?

Solution. Let r be the radius of a circle. ...

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The expert examines measurement, uncertainty and significant figures.

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