Chapter R - Test - Chapter R Test - Page 41: 14

$50,395ft$

Based on the given table, MT. Foraker is $17,400ft$ while the Philippine Trench is $-32,995ft.$ Hence, the difference in the two heights is \begin{array}{l}\require{cancel} 17400-(-32995) \\\\= 17400+32995 \\\\= 50,395ft .\end{array}