5 seconds
because that is the positive zero of that equation
3 because the x value has been repeated
The answer is for 1st question is “10.4” and for the second question “non of these choices are correct”.
Explanation:
For the 1st question:
tan = opposite / adjacent
tan 30 = x / 18
18 tan 30 = x
x = 10.4
For the 2nd question,
If a triangle as an angle of 90 degree, it is 100% a right triangle.
Hope it helps :), mark me brainliest please!
Answer:

Step-by-step explanation:
GIVEN: A right circular cone that has a height of
cm and a base with a diameter of
cm.
TO FIND: Volume of cone.
SOLUTION:
radius of cone 
height of cone 
Volume of cone 
putting values we get
Volume of cone 

Hence the volume of cone is 