Astock bottle of medication contains 500 mg of drug. you used 125 mg for one prescription and 62.5 mg for a second prescription, while the third prescription was for a child and only 25.25 mg were necessary.

a. what quantity (mg) medication has been used? round to the nearest hundredths.

b. what quantity (mg) of the original medication is left in the stock bottle? round to the nearest tenths.

a)The quantity (mg) of medication used to the nearest hundredths is 212.75mg

b) The quantity (mg) of the original medication left in the stock bottle to the nearest tenths is 287.3 mg.

Step-by-step explanation:

For question a) 125mg + 62.5mg +25.25mg= 212.75 mg to the nearest hundredths

b) The quantity left can be calculated by subtracting 212.75 from 500

500 - 212.75 = 287.25 to the nearest tenth is 287.3mg

answer: 25.4 units

step-by-step explanation: radius = 12.7 units

diameter = twice the radius

diameter = 12.7 x 2

= 25.4