Answer: 109 mg
Step-by-step explanation:
Round 9 3/4 to 10 ft
10 × 4 = 40 ft²
answer is 40ft² estimated
Answer: option a.
Step-by-step explanation:
By definition, we know that:

Substitute
into the first equation, solve for the cosine and simplify. Then, you obtain:

As
then
:

Now we can find
:
