Answer:
Increase in area of circle is
square mm
Step-by-step explanation:
The actual question is
Find the approximate increase in its area if the radius increases from 20 mm to 22 mm.
Solution
The area of a circle of radius r is given by

Area of circle of radius 20 mm is
square mm
Area of circle of radius 22 mm is
square mm
Increase in area of circle
square mm
Answer:
$30,000
Step-by-step explanation:
The capital value is given by

where R(t) is annual rate
r - annual rate of interest
capital value 
= lim at b tend to infinity
=lim at b tend to infinity ![\left [ \frac{1200}{-0.04} e^{-0.04 t} \right ]_0^b](https://tex.z-dn.net/?f=%20%5Cleft%20%5B%20%5Cfrac%7B1200%7D%7B-0.04%7D%20e%5E%7B-0.04%20t%7D%20%5Cright%20%5D_0%5Eb)
-30,000 { lim at b tend to inifinity![(e^{-0.04 b) = e^0]](https://tex.z-dn.net/?f=%20%28e%5E%7B-0.04%20b%29%20%3D%20e%5E0%5D)
As

36/54 and 6/9
is a pair of proportional fraction
The most reasonable estimate for the height of a two-story house is "15 meters".
The 15 centimeters is not reasonable, it is too small. While the 15 kilometers is not also reasonable since it is too big. Kilometers is used for long distance.