Debbie and her friend went to the mall. Together, they had $40 to spend. They each bought a shirt that costs $12 and bought some
1 answer:
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we know that
1 ft is equal to 12 in
1 cubic yard is equal to 27 cubic feet
Step 1
<u>Find the area of the circular border of uniform width around the pool</u>
Let
x---------> the uniform width around the pool
we know that
The diameter of the circular pool measures 10 feet
so
the radius r=5 ft
the area of the circular border is equal to
step 2
volume of the concrete to be used to create a circular border is equal to
V=1 yd^{3}-------> convert to ft^{3}
V=27 ft^{3} -------> equation 1
the depth is equal to 4 in-------> convert to ft
depth=4/12=(1/3) ft
volume of the concrete to be used to create a circular border is also equal to
V=Area of the circular border*Depth
-------> equation 2
equate equation 1 and equation 2
using a graph tool------> to resolve the second order equation
see the attached figure
the solution is the point
x=2.126 ft
therefore
<u>the answer is</u>
The uniform width around the circular pool border is 2.126 ft
Answer:
Divide both sides by l.
Step-by-step explanation:
The equation that we have to solve in this problem is
where
A is the area
l is the length
w is the width
Here we want to solve the equation for w, the width. It means that we have to isolate this variable.
In order to do so, we proceed as follows:
1) We divide by l on both sides:
2) We simplify l on the right side, so we get:
So, we have solved for w.
Therefore, the correct answer is
Divide both sides by l.