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Gennadij [26K]
3 years ago
7

The diameter of a circle is 6 km what is the circles area

Mathematics
2 answers:
Kryger [21]3 years ago
8 0
Divide the diameter by 2 to get the radius. 6/2 = 3

A = pi r^2

Input.

A = (3.14) 3^2

A = 28.26 km^2
tankabanditka [31]3 years ago
3 0
The area of the circle will be 28.27 km.
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Solving a system of equations we will see that we need to use <u>40 liters of the 80% acid solution</u>, and the other <u>20 liters are of the 35% acid solution</u>.

<h3>How many liters of each solution do we need to use?</h3>

First, we need to define the variables:

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If you want to learn more about systems of equations:

brainly.com/question/13729904

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