Please help me thanks :)

728.72 inches^2

Step-by-step explanation:

So to start off we have to find the area of the pentagon.

Again I can’t put the formula for area so, yeah.

So it’s area is 139.36 inches^2.

Then for the other pentagon it would also be 139.36 inches^2.

So adding them up it would be 278.72 inches^2.

Next for the rectangles.

The two side lenghts are 9 and 10.

So 9 times 10 is 90 and since there is 5 sides 90 times 5 is 450 inches^2.

So when you add 450 and 278.72 you would get 728.72 inches^2.

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

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.