xThe diameter of a grain of sand is 0.06534 millimeter. Which value is the best estimate of this diameter? Responses 6×10−3 millimeter 6 × 10 − 3 millimeter 7×10−3 millimeter 7 × 10 − 3 millimeter 6×10−2 millimeter 6 × 10 − 2 millimeter 7×10−2 millimeter