Table:
text: List of tallest buildings in Denver
Timeline of tallest buildings
Timeline of tallest buildings
Name_ Street_address Years_as_tallest Height_ft_m Floors
Equitable Building 730 17th Street 1892–1910 148 / 45 9
Daniels & Fisher Tower 1601 Arapahoe Street 1910–1957 371 / 113 20
621 17th Street 621 17th Street 1957–1968 384 / 117 28
1600 Glenarm Place 1600 Glenarm Place 1967–1968 384 / 117 32
Brooks Tower 1020 15th Street 1968–1974 420 / 128 42
First Interstate Tower North 633 17th Street 1974–1978 434 / 132 32
555 17th Street 555 17th Street 1978–1981 509 / 155 40
MCI Plaza 707 17th Street 1981–1982 522 / 159 42
1801 California Street 1801 California Street 1982–1984 709 / 216 53
Republic Plaza 330 17th Street 1984–present 714 / 218 56

Question: How tall is the building named 555 17th Street in the list of tallest buildings in Denver?

Question: How tall is the 40 story building among the list of tallest buildings in Denver?