Answer: So to cover the patio it would take 255 whole tiles. 254.469 if you want to be exact.
Step-by-step explanation:
When finding flooring needed we are finding for area. We know the formula for finding the area of a circle is A=
so we plug in our known variables...
we know r because radius is half of diameter and diameter was given in problem. So half of 18 is 9.
r=9
A=
A=
81
A=254.469
I think either might be a or b
Answer:

Step-by-step explanation:
Given function is
.
Now let's find it's range.
we know that square root function always gives positive output then:






Hence range of the function is
.
we can repeat same process to find the range of all the given choices.
we will find that only 3rd choice has same range.
Hence final answer is 
Answer:
True
m∠T = 40.4°
Step-by-step explanation:
We know all the sides of the triangle but we do not know any of its angles.
To find out if the angle T = 40.4 ° we use the cosine theorem.
According to the cosine theorem:

Where
is the angle between a and b.
In this case:

Then we clear α from the formula and verify that it is equal to 40.4 °
