Acontract is good in the base of a circular fountain on the blueprint the base of the food has a date diameter of 18 cm the book has the skill address it to me and so forth see what will be the actual area of the base of the fountain and the squares the fda is blue to the nearest 10th of a square foot

Step-by-step explanation:

The following formula can be used for calculate the area of a circle:

Where "r" is the radius of the circle.

Let be "x" the actual diameter in feet of the base of the fountain.

You know that the  blueprint has a scale of  , then, you can set up the following proportion:

Solving for "x", you get:

Since the radius of a circle is half its diameter, you know that the actual radius  of  the base of the fountain is:

Now you can substitute the radius into the formula in order to calculate the actual area of the base of the fountain. Rounded to the nearest 10th, this is:

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560