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allsm [11]
2 years ago
8

A=pir^2 solve for pi

Mathematics
1 answer:
VashaNatasha [74]2 years ago
6 0

Given problem;

   A = \pi r²

   Solve for π;

To solve for π implies that we make it the subject of the expression.

So;

       A = π r²

      Now multiply both sides by \frac{1}{r^{2} }

 So;

                A x \frac{1}{r^{2} }   = \pi x r² x \frac{1}{r^{2} }

              r² cancels out from the right side and leaves only π;

                  π = \frac{A}{r^{2} }

So    \pi  = \frac{A}{r^{2} }

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Answer:

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7 0
2 years ago
Emma is taking out a loan in the amount of $25,000. Her choices for the loan are a 60-month loan at 5% annual simple interest an
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Answer:

The answer is $2750. Which is the difference in the amount of interest Emma would have to pay for these two loans

Step-by-step explanation:

Interest=( P× r × t)/100

60 months is converted to 5years(60/12=5)

Interest= (25000 × 5 × 5) /100

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72months is converted to 6 years(72/12=6 Years)

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= (25000 × 6 × 6)/100

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The difference in the interest= $9000- $6250

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5 0
3 years ago
Find the perimeter of a square of sides 10.5cm​
Agata [3.3K]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
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Jalen made $533.75 while working at his job. He makes $15.25 an hour, how many hours did he work to make that amount of money?
mixer [17]

Answer:

35 hours

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Typically, people get their paycheck after 2 weeks.

Let say he worked 8 hours a day, a typical amount of hours for the average human who has a occupation.

Multiply the amount of hours by the amount payed every hour.

So 15.25 x 8 is 122

( so in 8 hours jalen made $122)

Add 8 hours, which would now be 16 hours worked.

16 x 15.25 = 244

(so in 16 hours jalen made $244)

Add another 8 hours of work time which would now be 24 hours (1 full day)

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Add 10 hours on now which would be 34 hours worked (2 days = 48 hours meaning she worked 1 day and 10 hours )

34x15.25=518.50

(getting closer to the amount she earned)

So if we add another hour

which would be 35 hours worked (1 day 11 hours)

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Therefore, Jalen worked 35 hours.

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