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RSB [31]
3 years ago
11

If you know the area of a circle, how can you find it's radius?​

Mathematics
2 answers:
pickupchik [31]3 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

The area (A) of a circle = πr² ← r is the radius

If A is given then to find r

πr² = A ( isolate r² by dividing both sides by π )

r² = \frac{A}{\pi }

Take the square root of both sides

r = \sqrt{\frac{A}{\pi } }

posledela3 years ago
3 0

You have the correct idea. The area A of a circle is given by A = π r2 where r is the radius of the circle and π is approximately 3.1416. Dividing both sides of this equation by π gives A/π = r2 and hence if you know A, divide it by π and then take the square root to find r.

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A major league baseball stadium sells three types of tickets. Reserved tickets are sold for $20 each, field-level tickets are so
Westkost [7]

There were six reserved tickets, three tickets for the field level, and one ticket for the box seat.

<h3>How many tickets for each do you have?</h3>

Let's say that x stands for the number of tickets that have been reserved, y stands for the number of tickets at the field level, and z stands for the number of tickets in the box seats.

Taking into consideration that a total of 10 tickets cost $370, the following equation may be used to express this data:

20x + 50y + 100z = 370........ (1)

x + y + z = 10 (2)

In addition, there were two times as many tickets for reserved seating as there were for field-level seating. The following equation may be used to express this:

x = 2y

x - 2y = 0...... (3)

The result of concurrently solving equations 1, 2, and 3 is that

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There were six reserved tickets, three tickets for the field level, and one ticket for the box seat.

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8 0
1 year ago
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fredd [130]

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2 years ago
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A strip is 5ft long and 2 feet wide. How much stripping is needed
Gnom [1K]

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deff fn [24]

Answer:

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Step-by-step explanation:

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3 years ago
(4.8). (-8.16)<br> find the slope of the line through each pair of points.
slamgirl [31]

Answer:

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5 0
3 years ago
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