Answer:
40m^2 152.6m^2
Step-by-step explanation:
Answer:
0.30555555....
Step-by-step explanation:
(The fives keep on coming, this is a repeating decimal.)
Answer:
three hundred and ninety three billion, two hundred and thirty four million, and thirty four.
Step-by-step explanation:
billion is any digit that has seven to nine digits behind it
Answer:
Steps shown below
Step-by-step explanation:
We will simplify this using definitions and identities. Let's start.

Using
, we have:

Using
, we have:

Hence, proved.
Simply use the formula they give you. For question 6, 4 is the radius. So the area of the circle is 4pi. Now for seven you do the same thing, but they gave you the diameter instead and it’s a half circle. So try that one on your own. Let me know if you get stuck