The radius, diameter, or circumference of a circle is given. find the missing measures. round to the nearest hundredth if necessary. d = 16.4 mm., r = ? , c = ? a. r = 32.8 mm, c = 25.76 mm c. r = 8.2 mm, c = 51.52 mm b. r = 32.8 mm, c = 51.52 mm d. r = 8.2 mm, c = 25.76 mm