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
Galina-37 [17]
4 years ago
12

What’s the answer?and how do you get it

Mathematics
1 answer:
Kay [80]4 years ago
7 0

the solid is made up of 2 regular octagons, 8 sides, joined up by 8 rectangles, one on each side towards the other octagonal face.

from the figure, we can see that the apothem is 5 for the octagons, and since each side is 3 cm long, the perimeter of one octagon is 3*8 = 24.

the standing up sides are simply rectangles of 8x3.

if we can just get the area of all those ten figures, and sum them up, that'd be the area of the solid.

\bf \textit{area of a regular polygon}\\\\ A=\cfrac{1}{2}ap~~ \begin{cases} a=apothem\\ p=perimeter\\[-0.5em] \hrulefill\\ a=5\\ p=24 \end{cases}\implies A=\cfrac{1}{2}(5)(24)\implies \stackrel{\textit{just for one octagon}}{A=60} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{\textit{two octagon's area}}{2(60)}~~+~~\stackrel{\textit{eight rectangle's area}}{8(3\cdot 8)}\implies 120+192\implies 312

You might be interested in
a roller coaster can take 24 riders in a single trip. 72 people went through the line to ride the roller coaster. how many trips
bulgar [2K]

Answer:

3 trips

Step-by-step explanation:

We would divide the amount of riders the roller coaster could take in a single trip by the total number of riders to determine how many trips it can make.

max amount of riders/total riders

72/24 = 3

Hence, the rollercoaster made 3 trips.

5 0
3 years ago
Suppose a triangle has two sides of length 33 and 37, and that the angle
marysya [2.9K]

Answer:

c^2=33^2+37^2-2(33)(37)cos120(i don't know for sure tho)

Step-by-step explanation:

LAW OF COSINES

6 0
3 years ago
In a certain Algebra 2 class of 26 students, 16 of them play basketball and 9 of them play baseball. There are 5 students who pl
Olegator [25]

Answer:

  10/13 ≈ 76.9%

Step-by-step explanation:

P(A∪B) = P(A) +P(B) -P(A∩B)

P(plays basketball ∪ plays baseball)

   = P(plays basketball) +P(plays baseball) -P(plays both)

P(plays basketball ∪ plays baseball) = 16/26 +9/26 -5/26 = 20/26 = 10/13

P(plays basketball or baseball) = 10/13 ≈ 76.9%

7 0
3 years ago
Read 2 more answers
What fraction of a gallon is 3 pints
dedylja [7]
1/2 a gallon would be 3 pints
7 0
3 years ago
Read 2 more answers
Tyler has saved $1,000. He earns $16 an hour. Tyler saves 25 percent of his net pay, after 20 percent is taken out for taxes. Wh
Viefleur [7K]

Answer:

The answer is A, B and C

Step-by-step explanation:

I did the USATestprep thingy

6 0
3 years ago
Other questions:
  • A blimp is flying parallel to a road and is 2460 feet directly above it. The angles of depression of two parked
    14·1 answer
  • I NEED HELP ASAP!!
    12·1 answer
  • If UV = KL and KL = 6, then UV = 6
    7·2 answers
  • A music teacher had six recorders but she decided to buy 4 more boxes with 2 in each box. How many recorders does she have now a
    8·1 answer
  • Select the points you need to calculate the
    7·1 answer
  • Cara's unpaid credit card balance is $5392.39. Her APR is 13.2%, and she made one new transaction for $204. What is her new bala
    14·1 answer
  • Finding the area of a triangle
    13·2 answers
  • A jar contains 8 large red marbles, 5 small red marbles, 9 large blue marbles, and 7 small blue marbles. If a marble is chosen a
    15·1 answer
  • (The photo is too big to fit so don't mind that.)
    11·1 answer
  • What property of a rhombus is used in this proof of showing that a triangle is an equilateral triangle?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!