word problems help

[gerry]

jet airplanes fly across the country at 35,000to40,ooo feet above sea level about how many miles is that?
and the second word problemis :
measurements the class measured the distance around the classroom. they found the walls had these lengths 121/2meters,111/4m,121/2,111/4
how many meters in the distance around the room, and how do I get the answer?

[shill]

1. 35 000 ft * 1 mi/5 280 ft = approx. 6.6 mi.
2. Since each pair of walls is equal in length, the room is a rectangle, so you simply multiply length by width. 121/2 m * 111/4 m = 13 431/8 m (1678.875 m).