20 x 10 please do this

200

Step-by-step explanation:

The answer is 200.

Step-by-step explanation:

20 · 10 can be done like this:

Take off the zeros so that it is 2 · 1.

We know what 2 · 1 is (2 if you didn't know).

Now we can add the total number of zeros from both terms to the end of 2 to get the answer.

Since 20 and 10 both have a zero on the end, we know that there will be 2 total zeros after the 2.

So the answer is 200.

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

idk

step-by-step explanation:

use that smart brain