Answer
26.5625
Work Step by Step
$11010.1001_2$
$=1\times2^4+1\times2^3+0\times2^2+1\times2^1+0\times2^0+1\times\frac{1}{2}+0\times\frac{1}{4}+0\times\frac{1}{8}+1\times\frac{1}{16}$
$=16+8+0+2+0+\frac{1}{2}+0+0+\frac{1}{16}$
$=16+8+0+2+0+\frac{8}{16}+0+0+\frac{1}{16}$
$=26\frac{9}{16}=26.5625$
