00:01
Alright, so we're going to do some conversions here between metric units.
00:04
For part a, we have 8 .43 centimeters and we want to know how many millimeters that is.
00:13
So there's 10 millimeters in every 1 centimeter.
00:18
So multiplying by 10, we get 84 .3 millimeters.
00:23
A millimeter is smaller, so there's going to be more millimeters in the same quantity as there are centimeters.
00:29
Alright, for part b, we have 2 .41 times 10 to the 9th centimeters and we want to convert that to meters.
00:36
So 1 meter is 100 centimeters.
00:39
I'll write that as 10 to the 2nd power because we already have scientific notation, so that's a little easier.
00:44
So the 10 to the 9th divided by the 10 to the 2nd, subtract the exponents and you get 7.
00:49
So this is 2 .41 times 10 to the 7th power and that's going to be in meters.
00:55
Alright, for part c, we have 294 .5 nanometers and we want to know how many centimeters that is.
01:05
So there's 100 centimeters in a meter or 10 to the 2nd power and there's 10 to the 9th nanometers.
01:12
So this is basically saying 294 .5 times 2 minus 9 is negative 7 times 10 to the negative 7th centimeters.
01:26
And let's write that in standard notation where this first number is between 1 and 10...