A cone has a radius of 4 feet on its base. The approximate volume of the cone is 189 ft^3. Determine the height of the cone to the nearest tenth of a foot. Use 3.14 for π.(5 points) ANSWER RESPONCE C

A. Use this formula: Responce Area

B. Substitute in for the radius and simplify to get Responce Area

C. Use the reciprocal to get about Responce Area

D. Use the inverse operation of Responce Area to get h by itself.

D. Height is approximately Responce Area

responce A:
V = 4/3 pi r^3
A = pi r^2
V = pi r^2 h
V= 1/3 pi r^2 h

responce B:
189 = 8/3 pi h
189 = 64/3 pi h
189 = 16/3 pi h
189 = 16 pi h

responce C:
1008 = pi h
504 = pi h
35.4 = pi h
23.6 = pi h

responce D:
subtraction
addition
multiplication
division

responce D:
8.2 ft
11.3 ft
2.5 ft
22.6 ft

1 answer

To solve for the height of the cone, we can use the volume formula for a cone:

Response A: \[ V = \frac{1}{3} \pi r^2 h \]

Where:

  • \( V \) is the volume,
  • \( r \) is the radius,
  • \( h \) is the height.

Response B: Given:

  • \( V = 189 \) ft³,
  • \( r = 4 \) ft.

Substituting in the values into the formula: \[ 189 = \frac{1}{3} \pi (4^2) h \] \[ 189 = \frac{1}{3} \pi (16) h \] \[ 189 = \frac{16}{3} \pi h \]

Now, multiplying both sides by 3 to eliminate the fraction: \[ 567 = 16 \pi h \]

Now, substituting \(\pi \approx 3.14\): \[ 567 = 16 (3.14) h \] \[ 567 = 50.24 h \]

Response C: To get \( h \) by itself, divide both sides by 50.24: \[ h \approx \frac{567}{50.24} \] Calculating the right side: \[ h \approx 11.3 \text{ ft} \]

Response D: Height is approximately: \[ h \approx 11.3 \text{ ft} \]

So, the organized answers are: Response A: \( V = \frac{1}{3} \pi r^2 h \)

Response B: \( 189 = \frac{16}{3} \pi h \)

Response C: \( h \approx 11.3 \text{ ft} \)

Response D: Height is approximately 11.3 ft.