The area of the house is the amount of space on the house.
- The length of the addition is x + 20
- The area of the original house is

<h3>The length of the addition</h3>
The area of the addition is given as:

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Factorize

Factor out x + 20

The width of the addition is x - 10.
Hence, the length of the addition is x + 20
<h3>The area of the original house</h3>
The dimension of the original house is
x + 20 by x + 10
So, the area is:

Expand

This gives

Hence, the area of the original house is 
Read more about areas at:
brainly.com/question/24487155
Answer:
8
Step-by-step explanation:
8+12+4+3+14+1+9+13=64, 64/8=8
Answer:
(4x+12)=90
x= 19.5
Step-by-step explanation:
Answer: i dont know how exact you want it but the answer is 31.4159265359
Step-by-step explanation: you have to double the raduis and multiple buy pie.
i think the answer would be C