Answer:The answer is choice 3
Step-by-step explanation:
Answer:
h=12
Step-by-step explanation:
First look at the formula for finding the volume of a cone- 
Next substitute any variables for values you already know- 
Then solve the equation.
-2,-7 because you go the same ammount in the opposite direction
Answer:
450 cm^3
Step-by-step explanation:
( 1/2 (5+7.5) 6 ) 12
Lets assume center point of circle as O
OD is the radius of circle . so OD is also 7
All the sides of the triangle are equal . so angle at the center O is 60 degree.
radius = 7
Length of arc CD = 
= 
= 
= 