Answer:
37.7 mi²/h
Step-by-step explanation:
The area formula is ...
A = πr²
Differentiating with respect to time gives ...
dA/dt = 2πr·dr/dt
Filling in the given values, we have ...
dA/dt = 2π(3 mi)(2 mi/h) = 12π mi²/h
The area is increasing at the rate of about 37.7 mi² per hour.
There are 31 days in January
The effective rate is calculated in the following way:
![r = {(1 + \frac{i}{n} )}^{n} - 1](https://tex.z-dn.net/?f=r%20%3D%20%20%7B%281%20%2B%20%20%5Cfrac%7Bi%7D%7Bn%7D%20%29%7D%5E%7Bn%7D%20-%201)
where r is the effective annual rate, i the interest rate, and n the number of compounding periods per year (for example, 12 for monthly compounding).
our compounding period is 2 since the bank pays us semiannually(two times per year) and our interest rate is 8%
so lets plug in numbers:
Answer:
27600
Step-by-step explanation:
28 long +12 -->40
11 wide +12 --->23
24 tall +6--->30
v=40×23×30=27600 cubic inches
87.474 hope it’s right :)