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
disa [49]
3 years ago
9

Question 7

Mathematics
1 answer:
Natali5045456 [20]3 years ago
4 0
To solve take circumference of the lamp shade( 2pi(r) or pi(d) ) so circumference is 12pi.
Then multiple by hight or altitude to get surface area ( circumference x height)
SA =72pi or ~226.19 in^2

If you are putting material on the top of lamp to, add pi(r)^2 or 36pi= ~113.10 in^2
You might be interested in
Unghiurile ∢AOB, ∢BOC, ∢COD și ∢DOA sunt unghiuri în jurul punctului O, ∢AOB = 80°, ∢BOC = 140° și CO ⊥ OD.
Sonbull [250]

Answer:

a) ∡AOC = 140 °

∡AOD = 40 °

b) ∡AOB = ∡BOC + ∡AOC și ∡BOC = ∡AOC (unghiuri formate din segmentul OC) prin urmare, segmentul OC bisectează ∡AOB

Step-by-step explanation:

a) Calculați măsurile unghiurilor ∢AOC și ∢AOD.

b) Arătați că jumătatea liniei opuse jumătății liniei OC este bisectoarea unghiului ∢AOB

a) Parametrii dați sunt;

∡AOC. ∡BOC. ∡COD și ∡DOA sunt unghiuri în jurul circumferinței unui cerc

∡AOB = 80 ° și ∡BOC = 140 °, segmentul CO este perpendicular pe segmentul DO

Prin urmare, avem;

∡AOB + ∡BOC + ∡AOC = 360 ° (Suma unghiurilor într-un punct = 360 °)

∴ ∡AOC = 360 ° - (∡AOB + ∡BOC) = 360 ° - (80 ° + 140 °) = 140 °

  ∡AOC = 140 °

∡BOC + ∡BOD = 180 ° (Suma unghiurilor unui triunghi = 180 °)

∡BOD = 180 ° - ∡BOC = 180 ° - 140 ° = 40 °

∡BOD = 40 °

∡ BOD + ∡AOD = ∡AOB

∡AOD = ∡AOB - ∡BOD = 80 ° - 40 ° = 40 °

∡AOD = 40 °

b) Deoarece avem ∡AOB = ∡BOC + ∡AOC și ∡BOC = ∡AOC = 140 °, avem;

∡AOB = 140 ° + 140 ° = 280 ° = 2 × ∡BOC = 2 × ∡AOC

Prin urmare, segmentul OC bisectează ∡AOB

3 0
3 years ago
What is the total surface area of the following square pyramid?
Svetradugi [14.3K]

Answer:

The surface area of a square pyramid is the sum of the areas of all its 4 triangular side faces with the base area of the square pyramid. If a, h, and l are the base length, the height of the pyramid, and slant height respectively, then the surface area of the square pyramid = a2+ 2al (or) a2+2a √a24+h2 a 2 4 + h 2 .

Step-by-step explanation:

7 0
2 years ago
The top surface of a world-record rectangular strawberry shortcake was 175.33 ft long and 48 inches wide. Use the formula for pe
saul85 [17]
Answer: 446.66

Explanation:
The formula for perimeter is 2 x length +2 x width
So you multiply 175.33 which gives you 350.66 and add it to 96 which gives you 446.66
4 0
3 years ago
SOMEONE PLEASE HELP ITS DUE TONIGHT<br><br> EXPLANATION = BRAINLIEST
Vaselesa [24]

Given:

Radius of the circle = 4 meters

Measure of arc = 135 degrees

To find:

The area of the sector bounded by the given arc.

Solution:

Formula for area of a sector is:

A=\pi r^2\times \dfrac{\theta}{360^\circ}

Where, r is the radius and \theta is the central angle or measure of intercepted arc.

Putting r=4,\ \theta =135^\circ in the above formula, we get

A=\pi \times (4)^2\times \dfrac{135^\circ}{360^\circ}

A=\pi \times 16\times \dfrac{3}{8}

A=\pi \times 2\times 3

A=6\pi

Therefore, the exact area of the given sector is 6\pi square meters.

3 0
2 years ago
What is the sum of the exterior angles, one at each vertex, of a polygon with 20 sides?A.20B.360C.180D. We need more information
ale4655 [162]

The measure of an exterior angle in a polygon with n sides is given by:

a_n=\frac{360}{n}

So, for n = 20, we have the measure of the exterior angles of the polygon with 20 sides:

\begin{gathered} a_{20}=\frac{360}{20} \\ a_{20}=18\degree \end{gathered}

Now, to find the sum of all exterior angles, let's multiply the exterior angles by the number of sides of the polygon:

\begin{gathered} S_{20}=a_{20}\cdot n \\ S_{20}=18\cdot20 \\ S_{20}=360\degree \end{gathered}

Therefore the sum is equal to 360°, correct option: B.

(The sum of exterior angles of a polygon with n sides is always equal to 360°)

7 0
1 year ago
Other questions:
  • A. Circle
    9·2 answers
  • Raul has $40
    13·2 answers
  • Need help on question 1 ASAP
    15·1 answer
  • The table shows all the possible sums when rolling two number cubes numbered 1-6 what is the probability that rolling two cubes
    15·2 answers
  • Please tell me if this is right or wrong I really need to know.
    9·1 answer
  • John goes to a bookstore. he wants to buy at. most 25 books and spend at most $75. paperback books cost 1.75 and har cover books
    8·1 answer
  • The line segment joining A(6, 3) to B(–1, –4) is doubled in length by having half its length added to each end. Find the coordin
    12·1 answer
  • Solve the system of equations by substitution.
    6·1 answer
  • In the given figure x = 145°. What theorem can be used to prove the lines p and q are parallel?
    8·1 answer
  • ∠A and \angle B∠B are vertical angles. If m\angle A=(7x-6)^{\circ}∠A=(7x−6) ∘ and m\angle B=(8x-27)^{\circ}∠B=(8x−27) ∘ , then f
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!