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
spayn [35]
3 years ago
14

A cone and a triangular pyramid have a height of 9.3 m

Mathematics
2 answers:
I am Lyosha [343]3 years ago
8 0

Answer:

17.1

Step-by-step explanation:

Otrada [13]3 years ago
7 0

Answer:

x=17.1\ in

Step-by-step explanation:

<u><em>The complete question is</em></u>

A cone and a triangular pyramid have a height of 9.3 m  and their cross-sectional areas are equal at every level  parallel to their respective bases. The radius of the base of the cone is 3 in and the other leg (not x) of the triangle base of the triangular pyramid is 3.3 in

What is the height, x, of the triangle base of the  pyramid? Round to the nearest tenth

The picture of the question in the attached figure

we know that

If their cross-sectional areas are equal at every level  parallel to their respective bases and the height is the same, then their volumes are equal

Equate the volume of the cone and the volume of the triangular pyramid

\frac{1}{3}\pi r^{2}H=\frac{1}{3}[\frac{1}{2}(b)(h)H]

simplify

\pi r^{2}=\frac{1}{2}(b)(h)

we have

r=3\ in\\b=3.3\ in\\h=x\ in\\pi=3.14

substitute the given values

(3.14)(3)^{2}=\frac{1}{2}(3.3)(x)

solve for x

28.26=\frac{1}{2}(3.3)(x)

x=28.26(2)/3.3\\x=17.1\ in

You might be interested in
- 4x + 3y +z, if x=-5, y=2 and z=0
Gala2k [10]
  • Answer:

<em>26</em>

  • Step-by-step explanation:

<em>- 4x + 3y + z =</em>

<em>= -4(-5) + 3(2) + 0</em>

<em>= 20 + 6 + 0</em>

<em>= 26</em>

<em />

4 0
2 years ago
Read 2 more answers
Limit as x approaches 9 of x^2 -81/sqrt of x - 3
Ipatiy [6.2K]

Answer:

108

Step-by-step explanation:

Limit as x approaches 9 of x^2 -81/sqrt of x - 3

First substitute x into the expression

= 9²-81/√9 - 3

= 81-81/3-3

= 0/0 (indeterminate)

Apply l'hospital rule

= lim x -> 9 d/dx(x²-81)/√x - 3

= lim x -> 9 2x/1/2√x

Substitute x = 9

= 2(9)/1/2√9

=18/1/(2(3)

=18 × 6/1

= 108

Hence the limit of the function is 108

7 0
3 years ago
Priya measured the length of lizard to be 11 cm. The actual length is 12 cm. Find the % error.
Aleksandr [31]

Answer:

8.33%

Step-by-step explanation:

Formula for percent error:

|\frac{observed value - expected value}{expected value} | * 100%

Using this formula, we get:

|\frac{11-12}{12} |* 100 = \frac{100}{12} = 8.33

If you found this answer helpful please consider leaving 5 stars, giving it a like, or if you asked this question, mark this answer as Brainliest. Thanks!

8 0
2 years ago
А 65° B 45° 70°<br><br><br><br><br><br>answer this for me please​
nikklg [1K]

Answer:

"With the high level of interest in our 45-70

Step-by-step explanation:

7 0
2 years ago
There were 60 seventh grade students who signed up for soccer tryouts last year. This year, 48 seventh graders signed up for try
Lubov Fominskaja [6]

Answer:

20%

Step-by-step explanation:

(60 - 48) / 60 = 0.2    (20%)

3 0
3 years ago
Other questions:
  • Work out the acceleration for the first 3 seconds?
    9·2 answers
  • Find the area of the trapezoidal cross-section of the irrigation canal shown below. Your answer will be in terms of h, w, and θ.
    14·2 answers
  • Solve mathematics question, please:) Unanswered re-asked question.
    9·2 answers
  • 1. Based on the information given, can you determine that the quadrilateral must be a
    6·1 answer
  • (5ab - 10b^2 + 15bc) ÷ 5b
    14·2 answers
  • Please Help <br> What equation is graphed in this figure?
    6·1 answer
  • You are solving 5 – 83 = y3. Which equation will you get if you multiply both sides by 3?
    6·1 answer
  • explain how to find the middle quartile of a box-and-whisker plot. a. the middle quartile is the mode of the data. b. the middle
    13·2 answers
  • What percentage of 25kg is 15kg​
    12·1 answer
  • Help me please please please
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!