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Softa [21]
3 years ago
7

The area of a circle with a diameter of 240 mm is?

Mathematics
2 answers:
Cloud [144]3 years ago
7 0
The answer would be B
gizmo_the_mogwai [7]3 years ago
4 0
First, consider the formula for area of a circle:

Area of a circle= π r²

Secondly, because the diameter is double the radius, and we have been given the diameter, we can find the radius!

               d/2=r
(240mm) / 2= r
       120mm = r

Finally, now that we know the radius, we can find the area!

Area = π r²
         = π (120)²
         = π 14400mm² OR  45238.93 mm²

Hope this helps!
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He system of equations below has no solution.
vesna_86 [32]

a linear combination can be:

(a + b)*(4x + 15y) = a*12 + b*15

<h3>How to solve the given system of equations:</h3>

Here we have the system of equations:

(2/3)*x + (5/2)*y = 15

4x + 15y = 12

To solve the system of equations, we first need to isolate one of the variables in one of the equations, I will isolate x on the second equation.

4x = 12 - 15y

x = (12 - 15y)/4

Now we can replace that in the other equation:

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Now we can solve that for y.

2 - (10/4)*y + (5/2)*y = 15

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That is a false equation, then we conclude that the system of linear equations has no solutions.

This means that the two lines are parallel lines, then a linear combination can be:

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If you want to learn more about systems of equations:

brainly.com/question/13729904

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