Answer
Mount Everest is taller by 239 meters.
Work Step by Step
We can convert the height of Mount Everest from units of feet to units of centimeters.
$29,035~ft = \frac{29,035~ft}{1}\times \frac{12~in}{1~ft} \times \frac{2.54~cm}{1~in} = 885000~cm$
Since 1 m = 100 cm, we need to move the decimal place 2 places to the left to convert from units of cm to units of m.
$885000~cm = 8850~m$
Mount Everest has a height of 8850 m.
K2 has a height of 8611 m.
Mount Everest is taller by 239 meters.