Answer:
Option B. 
Step-by-step explanation:
we know that
The volume of a cone is equal to

Solve for the radius r
That means-----> isolate the variable r
Multiply by 3 both sides

Divide by
both sides

square root both sides

Answer: 
<u>Step-by-step explanation:</u>
Given: cos x =
, x is in Quadrant 4
Use Pythagorean Theorem to find sin x:
8² + y² = 17²
y² = 17² - 8²
y² = 289 - 64
y² = 225
y = 15
→ sin x = 
Use the double angle formula to find cos (2x):

Answer:
nice question you asked me dear
Answer:
135 cm³
Step-by-step explanation:
- To find volume: you multiply length*width*height
2. 
3. 6*5*4 1/2
4. 6*5=30
5. 30*4 1/2=135
6. 135 cm³
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