00:01
Okay, now we do a problem 73.
00:04
73.
00:06
A, 22 .5 inch.
00:11
We need to convert this to centimeter.
00:15
And we know one inch equal to 5 54 cm.
00:22
So we just do conversion.
00:24
The units we want to put on the top and unit we want to cancel, we put in the bottom.
00:29
And we will have 57 .15.
00:34
Centimeter and for this you have to see the result you have to round to three significant because the quantity gives us in three significant okay so three here we'll have so we will have 57 .2 centimeters we round up because the number we want to be removed equal five so the receiving number increase by one and next be we have one, two, six feet.
01:11
One, two, six feet.
01:13
And we need to do this two kilometers, right? but now we do indirectly.
01:22
We can go this two meter.
01:24
In your book, we have one meter.
01:27
Equal 1 .094, yeah, right? oh, no, no.
01:33
This feet.
01:40
We can go to, i'm sorry, centimeter here.
01:45
We need to go to centimeter.
01:47
We don't go to, yeah.
01:50
And we know one foot equal 30, 48 centimeters.
01:57
So put one foot here...