Q. What is the volume of a hemisphere with a diameter of 4.2cm, rounded to the nearest tenth of a cubic centimeter?Answer: cm3
Find Hemisphere Radius: Find the radius of the hemisphere.The diameter of the hemisphere is 4.2cm. The radius is half of the diameter.Radius = Diameter /2Radius =4.2cm/2Radius =2.1cm
Calculate Volume Formula: Use the formula for the volume of a sphere to find the volume of the hemisphere.The formula for the volume of a sphere is (34)πr3. Since we want the volume of a hemisphere, we will take half of the volume of a sphere.Volume of hemisphere = (21)×(34)πr3
Substitute Radius and Calculate: Substitute the radius into the formula and calculate the volume.Volume of hemisphere = (1/2)×(4/3)π(2.1cm)3Volume of hemisphere = (1/2)×(4/3)π(2.1cm×2.1cm×2.1cm)Volume of hemisphere = (1/2)×(4/3)π(9.261cm3)Volume of hemisphere = (1/2)×(4/3)×3.14159×9.261cm3Volume of hemisphere = (1/2)×4.18879×9.261cm3Volume of hemisphere = 2.094395×9.261cm3Volume of hemisphere = 19.396cm3 (unrounded)
Round Volume Result: Round the result to the nearest tenth of a cubic centimeter.Volume of hemisphere (rounded) = 19.4cm3
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