Answer:

Since the measurement can't be negative the correct answer for this case would be 
Step-by-step explanation:
Let's assume that the figure attached illustrate the situation.
For this case the we know that the original area given by:

And we know that the initial area is a half of the entire area in red
, so then:

And we know that the area for a rectangular pieces is the length multiplied by the width so we have this:

We multiply both terms using algebra and the distributive property and we got:

And we can rewrite the expression like this:

And we can solve this using the quadratic formula given by:

Where
if we replace we got:

And the two possible solutions are then:

Since the measurement can't be negative the correct answer for this case would be 
The anser is false that what i think ):):(:(:(:(:(:
Answer:
the above photo is what you should do. multiply every term with every other term in each bracket.
No
Arithmetic sequence has terms which decrease or increase by the same amount
for example 3,6,8,12 ....
this sequence is geometric where the terms are obtained by multiplying previous term by 10