An open metal bucket is in the form of a frustum cone with a height of 21 cm and a radii of its lower and upper ends as 10 cm and 20 cm, respectively. Find the volume of the bucket in liters (L) Using the formula:1.047h(R^2=r^2=Rr) and the conversion factor:1cm^3 = 1mL  . Remember to label your units, round to the nearest thousandths place.

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