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Sagot :
Answer:
2.2568m
Step-by-step explanation:
volume= 12 π cm³
or, 1/3 πr²h = 12π cm³
or, πr² × 9 = 12π ×3
or, r²= 36π/9π
or, r²= 4
or, r= 2
d = 2r = 2× 2= 4 cm
The diameter of the opening of the cone is equal to 4 centimeters.
Given the following data:
- Volume of cone = 12π cubic centimeters.
- Height of cone = 9 centimeters.
To determine the diameter of the opening of the cone:
How to calculate the diameter.
Mathematically, the volume of a cone is given by this formula:
[tex]V = \frac{1}{3} \pi r^2h[/tex]
Where:
- h is the height.
- r is the radius.
Substituting the given parameters into the formula, we have;
[tex]12 \pi = \frac{1}{3} \pi r^2 \times 9\\\\12 =3r^2\\\\r^2=4\\\\r=\sqrt{4}[/tex]
r = 2 centimeters.
For the diameter:
[tex]Diameter = 2r\\\\Diameter = 2 \times 2[/tex]
Diameter = 4 centimeters.
Read more on radius here: brainly.com/question/21367171
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