Answer:
w+5=7
Step-by-step explanation:
Answer:
The length of the fence that encloses the park is 400 m
Step-by-step explanation:
step 1
Find the length of the square city park
we know that
The area of a square is

where
b is the length side of the square
we have

substitute and solve for b

take square root both sides

step 2
Find out the length of the fence that encloses the park
we know that
The length of the fence is equal to the perimeter of the square city park
The perimeter of the square is

we have

substitute

therefore
The length of the fence that encloses the park is 400 m
Answer:

Step-by-step explanation:
The directrices of an ellipse are defined by

Where
, and
is the eccentricity defined by 
So, in the first choice, we have the equation

Where
and
, which means
and
.
In an ellipse, we have the relation

Replacing values, we have

So, the eccentricity is
and the directrices are
, which means the first choice is not the right answer. In other words, the right answer is the second choice, because third and fourth choices don't represent an ellipse, both fractions must be positive in that case.
Therefore, the right answer is

Well to find the area you do Length * Width * Height, so it should be 150