Answer: 
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below:
- Apply the Distributive property.
- Remember that, according the exponents properties, when you multiply two powers with equal base, you must add the exponents.
- Add the like terms.
Therefore, you obtain that the product is the following:

Answer: 818.4
Step-by-step explanation:
Using the area of a sector formula, we get the area of the entire sector is
.
Using the formula
, we get the area of the triangle is
.
So, the area of the shaded sector is 
Answer:
about 157%
Step-by-step explanation:
11/7=1.571
Answer:
108
Step-by-step explanation: