What is the area of this figure?

Step-by-step explanation:

First, just multiply 15 by 18, to get the full rectangle. You get 270.

Then, find the area of "free space".

6*3 = 18

5*9 = 45

And theres another space, so just multiple

9 by 3 = 27

then subtract these from 270

270 - 18-45-27 = 180

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.