The 4-liter acid material was a lower concentration than 40%. Call it 4 liters of x percent acid.
4x+10*40
————— =30
X+10
The approximation of the circumference of the ride is 138 feet to the nearest foot
<h3>How to determine the circumference?</h3>
The given parameters are:
- Center (a,b) = (0,0) i.e. the origin
- A circular ring, (x,y) = (16,15.1)
The radius is calculated using:

So, we have:

Evaluate
r = √484.01
Evaluate the square root
r = 22.0
The circumference is calculated using
C = 2πr
So, we have:
C = 2π * 22.0
Evaluate
C = 138
Hence, the approximation of the circumference of the ride to the nearest foot is 138 feet
Read more about circumference at:
brainly.com/question/14283575
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the answer I got is 30
Step-by-step explanation:
92-32=60 60-16=44 36-4=32 32-2=30