Answer:

Step-by-step explanation:
we know that
The scale is 
That means
1 unit in the drawing represent 40 units in the actual
or
1 inch in the drawing represent 40 inches in the actual
step 1
Find the actual dimensions of the living room
Multiply the dimensions of the living room in the drawing by 40


step 2
Convert inches to feet
Remember that

To convert inches to feet , divide by 12
so


step 3
Find the area in square feet
Multiply the length by the width

Convert to mixed number

Answer:
<u>Surface area = the sum of the area of all six sides:</u>
(11 · 10) + (11 · 10) + (11 · 8) + (11 · 8) + (8 · 10) + (8 · 10)
= 110 + 110 + 88 + 88 + 80 + 80
= 220 + 176 + 160
= 556 ft²
9/10 * 2/2 = 18/20
9/10 * 3/3 = 27/30
Answer:

Step-by-step explanation:
Assuming the question is:

We multiply and rearrange the trinomial:

This is a quadratic equation with:
a = 1
b = -13
c = -8
We use quadratic formula to find 2 values of a:

These are the 2 values of a:
