SOLUTION
Let us start with
a. To convert
To do this, we keep multipllying by 2 and keeping track of the whole number part. I will demonstrate this using the equation tab
So 0.6640625 ten to binary =
So to hexadecimal, 10 means A. So this becomes
(b) 27.625 means 27 + 0.625
So we will convert both the whole number part and the decimal part to base 2 and base 16, then we combine to get the answer
Now the decimal part
Therefore
To hexadecimal we will do the same, but 10 becomes A, 11 becomes B, 12 becomes C.
Therefore
That is 1B.A to base 16