The volume of a cone is 48π cubic inches. The cone has a height of 36 inches. Mark is finding the radius of the cone. Complete his work. 1. Rewrite the formula including the area of the base: 2. Substitute the values into the formula: 3. Simplify the right side: 4. Divide 12π to both sides: Step 5 is to . The radius of the cone is . V = 1 3 πr²h 48π = 1 3 πr²(36) 48π = 12πr² 4 = r²

Respuesta :

Answer:

C and A

Step-by-step explanation:

Step 5 is to ( C ) take the Square root of both sides

The radius of the cone is ( A ) 2 inches

The radius of the cone is 2 inches.

The volume of cone:

The volume of a cone is determined by the amount of space occupied by the cone. A three-dimensional figure having a single circular base is known as a cone. The base and the vertex are connected by a curved surface. A cone with a radius of r has a volume V that is one-third the area of the base B times the height h.

[tex]V=\frac{1}{3} \pi r^{2} h[/tex] or [tex]V=\frac{1}{3} Bh[/tex],

Since, [tex]B=\pi r^{2}[/tex]

How to determine the volume of cone?

Given that the volume of cone V is 48π cubic inches and Height of the cone h=36 inches.Volume of cone [tex]V=\frac{1}{3} \pi r^{2} h[/tex] -------1

Here, the base of the cone is circular in shape and the area of circle is [tex]\pi r^{2}[/tex]. Consider [tex]B=\pi r^{2}[/tex]

Substituting the area of base in the equation (1).

[tex]V=\frac{1}{3} \pi r^{2}[/tex]

    [tex]= \frac{1}{3} Bh[/tex]

Substitute the given values in the equation (1).

⇒ [tex]48\pi =\frac{1}{3} \pi r^{2} 36[/tex]

⇒ [tex]\frac{48\pi }{36\pi } =\frac{r^{2} }{3}[/tex]

⇒ [tex]\frac{12(3)}{9}=r^{2}[/tex]

⇒[tex]4=r^{2}[/tex]

⇒ [tex]r=2[/tex]

Thus, the radius of the cone is 2 inches.

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