Hey there, Lets solve this problem together.
The First step is to line up the numbers.
<span>We calculate </span>

<span>the result of which is </span>

<span>
</span>
<span>We calculate </span>

<span> the result of which is </span>

<span>.
</span>
Since we get a negative number in the next column, we must take 1 from the next column and carry it over to this column. Now the number will be changed to 10.
We calculate

, and the result is

.
<span>We calculate </span>

<span> the result of which is</span>

<span>.
</span>
Therefore,
Im not that good with these types of problems but i think it is b if my math is correct.
This is correct, because it takes 27 minutes to get home so it will probably be about 30 minutes.
Having the angle in radians and the diameter of the circle we can easily calculate the length using the following expression
Length = angle(radians)*diameter/2
With this expression we can easily deduce the perimeter of a circle (length of the full arc)
Length = Perimeter = 2*pi*r
There is only one operation involved in this process
7:8 Purl Stitches I believe ! :)