3. A supersonic transport (SST) airplane consumes about 18 000 L of kerosene per hour of
flight. Kerosene has a density of 0.965 g/mL. What mass of kerosene is consumed on a
flight of duration 3.0 h?​

1 a

2 d

3 a

4 c

explanation:

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation: