Clear your units. 990ft/sec * 60 sec/minute * 60 min/hour = 3,564,000miles/hour or 3.564x10^6 miles per hour.
990 millimeters = 3.2480315 feet
There are 330 yards in 990 feet. 990 feet x 1 yard/3 yard = 330 yards 1 yard = 3 feet
That depends on the weight of the round and length of the barrel. The average 180 grain loading is 990 feet per second. Though you can purchase 135 grain loads at 1420 feet per second. So the easy answer here is it varies on the ammo and barrel length.
990 mph
990
990000000 MPH
There are 110 yards in 330 feets.
Eiffel Tower in Paris, France
301 3/4 meters
Total square yards: 110.0
990 sq ft
2.045 acres. There are 43,560 square feet in an acre