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vladimir1956 [14]
3 years ago
7

4 formulas which include pi. 2 deal with circles and 2 deal with spheres

Mathematics
1 answer:
agasfer [191]3 years ago
8 0

circle

1. area=π*R square

2.circumference=2πr

sphere

1. curve surface area=4*π*R square

2. volume =4/3*π*R^3

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Does anyone know the answers to these?
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Step-by-step explanation:

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8. Loren already knows that he will have $500,000 when he retires. If he sets up a payout
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The annuity could provide $221.19 each month

Step-by-step explanation:

The ANNUITY FORMULA is P_{t}=\frac{d[(1+\frac{r}{n})^{nt}-1]}{\frac{r}{n}} , where

1. P_{t} is the balance in the account after t years

2. d is the regular deposit (the amount you deposit each year or month

    or .........)

3. r is the annual interest rate in decimal

4. n is the number of compounding periods in one year

5. t the number of years

∵ Loren knows that he will have $500,000 when he retires

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∴ r = (10/100) = 0.1

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- Divide both sides by 2260.487925

∴ d = $221.19

The annuity could provide $221.19 each month

Learn more:

You can learn more about deposit in brainly.com/question/8782252

#LearnwithBrainly

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