Interest earned : $837 principal : $3100 Interest rate : ? time : 6 years

1 answer:

7 0

Hi,

By definition, interest rate is the proportion of a loan that is charged as interest to the borrower, typically expressed as an annual percentage of the loan outstanding.

To find interest rate you need the principle, interest earned, and time.

Solve for Rate (R)

Where: r = I / Pt

I = 837 (dollars)

P = 3100 (dollars)

t = 6 (years)

r = 837 / ( 3100 × 6 ) = 0.045

r = 0.045

*converting r decimal to a percentage
R = 0.045 * 100 = 4.5%/year*

The interest rate required to accumulate simple interest of $ 837.00 from a principal of $ 3,100.00 over 6 years is 4.5% per year.

In short, rate: 4.5% / year

Faith xoxo

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How does the volume of a cylinder change if the radius is quadrupled and the height is reduced to a third of its original size?

KIM [24]

Answer:

the answer is 1/3 pie r2h

Step-by-step explanation:

The volume of a cylinder is given by πr²h where, r is the radius of the cylinder and h is the height of the cylinder.

Also r=d/2 , where d is the diameter of the cylinder.

Therefore if the diameter is halved, the radius also gets halved ,i.e., it becomes r/2. Therefore the new volume = π(r/2)²h

=π(r²/4)h

=(1/4) πr²h

Therefore the volume becomes one-fourth of the initial volume.