convert 89.2 kilm into millim obviously both of these are lengths and the base unit of length is the meter here and here there are several prefixes that we can put in front of base units which multiply by pairs of 10 in this case k the kilo and M if you do do a level physics you must learn at least these prefixes a g capital G for Giga and that means time 10^ of 9 a, million capital M for Mega * 10^ 6 that's a million a small k for kilo * 10 ^ 3 that's a th000 small C for centi * 10 the- 2 that's 100th a small M for Millie and that means time 10- 3 a thousandth this symbol which is the Greek letter mu for micro and micro means time 10- 6 a millionth and a small letter N for Nano which means time 10- 9 I'll actually do this question first because it's a little easier what is 27 microamps in apps 27 * 10 to the^ of the micro * 10- 6 and I could convert that into standard form 2.7 * 10- 5 amps looking at this one again convert 89.2 km into MM I'll do this in two stages first converting into met so [Music] 89.2 and then 4 kilo * 10 3 now I want to convert this into millim going from a unit with a prefix to the base unit what I've done is I've multiplied by the value of the prefix in this case going to millimet we're going from the base unit meters to a unit with a prefix millimet so we need to divide by the value of the prefix so that is [Music] 89.2 * 10 ^ 3 and now dividing by the value of Millie which is 10^ Theus 3 the answer to this is 89.2 * 10^ 6 mm