1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexus [3.1K]
2 years ago
12

The volume of a cone varies jointly with the area of the base and the height. When the area of the base is 27 cm2 and the height

is 6 cm, the volume is 54 cm3. Therefore, the area of the base is _ cm^2 when the height is 12 cm and the volume is 124 cm^3.
Mathematics
1 answer:
Tomtit [17]2 years ago
3 0
Cone=cup:
V=124<span>cm^3.
h=12cm
V=Bh
P=r</span>^2π+rsπ:
B=r^2π
B=V/h=124/12=10,3cm^2
r^2=B/π
r=√(B/π)=1,81 cm
S=√(r^2+h^2)=√(12^2+1.81^2)=√(144+3,28)=12,13 cm
P=r^2π+rSπ=3,28*3,14+1,81*12,13*3,14=10,29+68,93=79,22 cm^2
You might be interested in
A french class has a total of 25 student.The number of males is 7 more than the number of females how many males and how many fe
Lady_Fox [76]

Answer:

16 males and 9 females

Step-by-step explanation:

To solve this we can use a system of equations.

Let's start by naming the number of females x.

The number of males would then be y.

<u>Using these variables, we can set up 2 equations using info provided:</u>

A french class has a total of 25 students, -> x+y=25

The number of males is 7 more than the number of females -> x+7=y

Use substitution to solve.

<u>From the second equation:</u>

x+7=y

Subtract 7 from both sides.

x=y-7

Substitute that into the first equation.

x+y=25

y-7+y=25

Combine like terms.

2y-7=25

Add 7 to both sides.

2y=32

Divide both sides by 2.

y=16

Substitute y=16 into equation 2.

x+7=y

x+7=16

Subtract 7 from both sides.

x=9

Therefore, there are 16 males and 9 females in the french class.

3 0
2 years ago
Read 2 more answers
A restaurant records the number of tables served each night, and the results have the values: minimum = 3, lower
natulia [17]

Answer: A. The first one

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
The digits 1, 7, and 8 and 2 copies of the digit 5 are all arranged to form a 5-digit integer. How many different integers can b
viktelen [127]

Step-by-step explanation:

You have 5 digits.Youdonot say if duplication is allowed. I will assume not

For the first digit you have 5 choices. One of the 5 digits is gone.

You now have 4 digits to choose from. You pick one. Now you have but 3 left.

The total answer if 5*4*3*2*1 = 120

3 0
3 years ago
A side of a led lighting cube is 5 cm long. What is the area of its 6 faces?
ratelena [41]

Answer:

Of all 6 faces it would be 150

Step-by-step explanation:

If one side of the cube is 5cm long, then l × w = area of a face, so if it is a cube then all 4 sides are the same on a face so 5 × 5 = 25, so 25 × 6 faces = 150

8 0
2 years ago
Read 2 more answers
James is applying for a new job at a game design company. Job A offers $40,000 starting salary with a $1000 raise each year. Job
Ad libitum [116K]

Job B because every year he gets a $2800 every year and if he continues for 5 years he will get a total of $14000 but if he works at job A he gets $5000 after 5 years

6 0
2 years ago
Read 2 more answers
Other questions:
  • ① x²y" z² =<br> 3<br> (expand)
    9·1 answer
  • The figure below shows a shaded rectangle inside a large rectangle: A rectangle of length 10 units and width 5 units is shown. I
    12·2 answers
  • 2/3 + 3/4=? (pls show the steps on how you got an awnser :) )
    13·2 answers
  • What is the value of x
    10·1 answer
  • Which method works best to solve the following system of linear equations?
    11·1 answer
  • keisha surveyed a group of people to find their age and shoe size she then graph the ordered pairs (age, Shoe size) for each per
    10·1 answer
  • a number is doubled and then the product is increased by 6. This sum is then multiplied by -3, and the result is 54 greater then
    6·1 answer
  • Write the equation for the vertical line that passes through the point (5,-2)
    5·1 answer
  • Please help me
    15·1 answer
  • Tom bought a computer for 15% off from the list price of p dollars. if the sales tax was 8%, how much did he pay for the compute
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!