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2 years ago

What is the exact volume of the cone? (height is 9 cm, the radius is 15 cm)

Mathematics

2 answers:

Ugo [173]2 years ago

8 0

D is the answerr to the first one.

Illusion [34]2 years ago

6 0

1: Exact volume of cone = r^2 * h/ 3 = 15^2 * 9 / 3 = 225 * 9= 2025/3 = 675

2: Approximate volume of cone: pi* r^2 * h / 3 = 3.14 * 10^2 * 9/3 = 3.14 * 100* 9/3 = 3.14 x 900 / 3 = 2826/3 = 942 cm^3

3: Asks for the same as problem above, but we have to divide the diameter by 2 to get the radius first 10/2=5 now we can solve. : 3.14 * 5^2 * 5/3 = 3.14 * 25 * 5/ 3 = 3.14 * 125 / 3 = 392.5/ 3 = 130.8 m^3

The exact volume does not use pi: so that is why the first one is 675
The Approximate used pi or 3.14.

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Need help with this.

skelet666 [1.2K]

Answer:

-5/2(3x+4)<6-3x (multiply with -5/2)

-15/2x-10<6-3x (multiply with 2)

-15x-20<12-6x (change sides)

-15x+6x<12+20

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Hope this will help u :)

3 0

3 years ago

While the earth's orbit (path) about the sun is slightly elliptical, it

larisa [96]

The circumference= 186000000π miles and the speed or the earth is 7750000π miles per hour.

Step-by-step explanation:

Radius (r) = 93000000 miles

a) circumference= 2πr

= 2π(93000000) miles

= 186000000π miles

b) speed = distance / time

Here distance is the circumference and time is 24hrs because if the earth completes 1 revolution around the sun in 24hrs.

Speed = 186000000π/24

= 7750000π miles per hour

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2 years ago

7 and 12 Find the measure of angle x. Round your answer to the nearest hundredth. (please type the numerical answer only) (30 Po

goldfiish [28.3K]

Answer:

Angle Y = 35.69 degrees

Step-by-step explanation:

We can use some simple trigonometry to help us out. Here we know that side 7 is the opposite side relative to angle y, and 12 is the hypotenuse.

We think what trig ratio involves comparing opposite and hypotenuse. Sine is opposite over hypotenuse and we can set up a equation to solve.

Sine (Angle Y) = Opposite Side / Hypotenuse

Sine (Angle Y) = 7/12

(Angle Y) = Sine inverse (7/12)

Angle Y = 35.69

8 0

2 years ago

Lines that meet or cross each other to form square corners are called ______.

Viefleur [7K]

The lines that intersect to form square corners that are right angles are called: C. perpendicular lines.

<h3>What are Perpendicular Lines?</h3>

Perpendicular lines are lines that intersect each other at a point and forms for square corners that are right angles at that point of intersection.

An example of perpendicular lines is shown in the image attached below.

Thus, the lines that meet to form right angles are called: C. perpendicular.

Learn more about perpendicular lines on:

brainly.com/question/1202004

#SPJ1