Q. What is the volume of a hemisphere with a radius of 8in, rounded to the nearest tenth of a cubic inch?Answer: in3
Recall Sphere Volume Formula: Recall the formula for the volume of a sphere.The volume of a sphere is given by the formula V=34πr3, where r is the radius of the sphere. Since a hemisphere is half of a sphere, we will need to divide the volume of a sphere by 2 to get the volume of a hemisphere.
Calculate Full Sphere Volume: Calculate the volume of a full sphere with the given radius.Using the radius r=8 inches, we substitute into the formula for the volume of a sphere:Vsphere=34π(8)3Vsphere=34π(512)Vsphere=34×512×πVsphere=2048×π
Calculate Hemisphere Volume: Calculate the volume of the hemisphere.Since the hemisphere is half of the sphere, we divide the volume of the sphere by 2:Vhemisphere=2VsphereVhemisphere=22048×πVhemisphere=1024×π
Evaluate Hemisphere Volume: Evaluate the volume of the hemisphere and round to the nearest tenth.Vhemisphere=1024×πUsing the approximation π≈3.1416, we get:Vhemisphere≈1024×3.1416Vhemisphere≈3216.9984 cubic inchesNow, round to the nearest tenth:Vhemisphere≈3217.0 cubic inches
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