Aswimming pool and deck are built in a rectangle with length 40 ft and width 18 ft. if the pool itself is 320 square feet, what is the area of the deck itself?
a) 320 square feet
b) 400 square feet
c) 480 square feet
d) 560 square feet

40 x 18 = 720 square feet

720 - 320 = 400 square feet

 Answer is B

where is the image?

step-by-step explanation:

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m