Answer:
![\frac{(2)A}{h} =b](https://tex.z-dn.net/?f=%5Cfrac%7B%282%29A%7D%7Bh%7D%20%3Db)
b=0.00906m
Step-by-step explanation:
Hello! To solve this exercise we must remember that the area of any triangle is given by the following equation
![A=\frac{bh}{2}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7Bbh%7D%7B2%7D)
where
A=area=32.5m^2
h=altitude=7172m
b=base
Now what we should do take the equation for the area of a rectangle and leave the base alone, remember that what we do on one side of the equation we must do on the other side to preserve equality
![A=\frac{bh}{2} \\\frac{2}{h} A=\frac{bh}{2} \frac{2}{h} \\](https://tex.z-dn.net/?f=A%3D%5Cfrac%7Bbh%7D%7B2%7D%20%5C%5C%5Cfrac%7B2%7D%7Bh%7D%20A%3D%5Cfrac%7Bbh%7D%7B2%7D%20%5Cfrac%7B2%7D%7Bh%7D%20%5C%5C)
![\frac{A(2)}{h} =b](https://tex.z-dn.net/?f=%5Cfrac%7BA%282%29%7D%7Bh%7D%20%3Db)
solving
![\frac{2(32.5)}{7172} =0.0090[tex]\frac{A(2)}{h} =b\\b=0.00906m](https://tex.z-dn.net/?f=%5Cfrac%7B2%2832.5%29%7D%7B7172%7D%20%3D0.0090%5Btex%5D%5Cfrac%7BA%282%29%7D%7Bh%7D%20%3Db%5C%5Cb%3D0.00906m)
A(b-c)
First substitute values
-8(12+4)=
Next, solve using ordering of PEMDAS
-8 (12+4)=
-8 (16)=12
Divide $435.15 by 9 = $48.35 unit price
The area of the room must equal the sum of the areas of the tiles...
20*30=n(2*3)
600=6n
n=100
So 100 tiles are needed.