Correct question:
The height of a right cylinder is 3 times the radius of the base. The volume of the cylinder is 242 cubic units.
Answer:
6 units
Step-by-step explanation:
Let, radius, r = x
Height, h = 3x
Volume, V = 24π
Volume of cylinder = =πr²h
24π = π * x² * 3x
24π = π* 3x³
24 = 3x³
24 / 3= x³
8 = x³
x = 2
Height, h = 3x
h = 3(2) = 6 units
Given that the ball has a thickness of 1 cm and the radius at the outside is 5 cm, thus the radius from inside is 5 - 1 = 4cm.
The <span>approximate volume of rubber used to make the ball is given by the volume of the ball at the outside surface minus the volume of the ball at the inside surface.
i.e.
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Answer: The test statistic is t= -0.90.
Step-by-step explanation:
Since we have given that
n₁ = 50
n₂ = 25

So, s would be

So, the value of test statistic would be

Hence, the test statistic is t= -0.90.