Answer:

Step-by-step explanation:
The Cylindrical coordinates are:
x = rcosθ, y = rsinθ and z = z
From the question, on the xy-plane;


where:
0 ≤ r ≤
and 0 ≤ θ ≤ 2π
∴












Answer:
okkk
Step-by-step explanation:
The population increases by a factor 1.0167 every year so the require figure is:
103 * 1 . 0167^5 = 112 million
The probability of a 2 or a 5 is 50%