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3 years ago

The volume of a cone is 3,532.5 cm. The radius and height of the cone are equal. What is the radius of the cone?

1 answer:

3 0

Eh i tried answering this but i think i got the wrong answer. but i would put the cone’s volume at the beginning of the volume equation, the replace the R and H with x since they’re the same. Then solve for x.
So like, 3,532.5 = (pi)(r^2)(x/3)

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Plz help me thanks so muchhhhh

Vera_Pavlovna [14]

Hi there.

The answer is (-2,7). The second choice.

Explanation:

We can use the graph method or the solving method.

For the graph method, find where both graphs intercept and that is x = - 2 y = 7.

But if you don't use the graph method. We can solve the equation.

$y = 0.5x+ 8 \\ y = \frac{5}{10} x + 8 \\ y = \frac{1}{2} x + 8$

Convert the expressions in simplified form.

Then combine both equations.

$\frac{1}{2}x + 8 = 5 - x$

Because there is the denominator. We get rid of it.

Multiply the whole equation by 2.

$\frac{1}{2} x(2) + 8(2) = 5(2) - x(2) \\ x + 16 = 10 - 2x \\ 3x = 10 - 16 \\ 3x = - 6 \\ x = - 2$

Since it is the two variables linear equations, we need to find y-value too.

Substitute x = -2 in any given equations.

I will substitute x = -2 in y = 5-x

$y = 5 - x \\$

Substitute x = -2 in the equation.

$y = 5 - ( - 2) \\ y = 5 + 2 \\ y = 7$

Thus, the answer is x = -2, y = 7

(-2,7)

4 0

3 years ago

12×d=84. i need help with this problem please help me

kirza4 [7]

D=7 because 12 multiplied by 7 equals 84

4 0

3 years ago

Read 2 more answers

Sal is tiling his entryway. The floorplan is drawn on a unit grid. Each unit length represents 1 foot tile cost $1.25 per square

Tresset [83]

Answer: Sal will pay $77.78 to tile his entryway

Step-by-step explanation:

The image of the question is attached below.

Given each unit length = 1 foot

Tile cost per square feet = $1. 65

To find the area, split the floor shape into two shape.

One is trapezoid and the other is parallelogram.

Let's count the grid given.

The parallels sides of trapezoid are 7 ft and 4 ft, height is 7 ft.

The base and height of the parallelogram are 4 ft and 4 ft respectively.

Area of the trapezoid

Area of the trapezoid = 27.5 sq.ft

Area of the parallelogram = base × height

= 4 ft × 4 ft

Area of the parallelogram = 16 sq. ft

Total area = 27.5 sq. ft + 16 sq. ft

= 43.5 sq. ft

Cost of area per sq. ft = $1.65

Cost of area 43.5 sq. ft = 43. 5 × 1.65

= $71.775

= $71.78

Hence Sal will pay $71.78 to tile his entryway.

4 0

3 years ago

How do u solve 3= t + 11.5 - t ?

shepuryov [24]

11.5

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7 0

3 years ago

Line l bisects PQ at point M. Find value of X

Vanyuwa [196]

Answer:

x = $\frac{18}{7}$

Step-by-step explanation:

Since l bisects PQ at M then M is the midpoint of PQ, hence

PM = MQ, that is

5x - 7 = 11 - 2x ( add 2x to both sides )

7x - 7 = 11 ( add 7 to both sides )

7x = 18 ( divide both sides by 7 )

x = $\frac{18}{7}$

7 0

4 years ago