A necklace has a single pearl with a radius of 2.1 millimeters. What is the volume of the pearl? Round to the nearest tenth.
Use the volume formula of a sphere to get the volume of the pearl: v = 4/3 pi r3
v = 4/3 pi (2.1)3
v = 4/3 pi (9.261)
v = 38.79238608
v = 38.8 mm3
volume=\(\frac43\)\(\pi\)\(r^3\)
so the answer is 12.348\(\pi\)
which is approximently 38.7923861
