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
zalisa [80]
3 years ago
6

I need help on questions 48 49 and 50 and u need to find the surface area of the 3 polyhedras please and thank you!

Mathematics
1 answer:
White raven [17]3 years ago
7 0

48. The surface area of a cylinder is given by

... A = 2πr² + 2πrh = 2πr(r+h)

For r = 13 mi and h = 7 mi, this becomes

... A = 2π(13 mi)(13 mi + 7 mi) = 520π mi²

The surface area of the cylinder is 520π mi² ≈ 1634 mi².

49. The surface area of a rectangular prism is

... A = 2(LW + H(L+W))

For L = 20 m, W = 10 m, H = 7 m, this becomes

... A = 2((20 m)(10 m) + (7 m)(20 m + 10 m)) = 2(200 m² + 210 m²) = 820 m²

The surface area of the prism is 820 m².

50. The formula is the same as for problem 48.

For r = 10 m and h = 13 m, this becomes

... A = 2π(10 m)(10 m + 13 m) = 460π m² ≈ 1445 m²

The surface area of the cylinder is 460π m² ≈ 1445 m².

_____

When calculations are repetitive, it is convenient to let a calculator or spreadsheet do them.

You might be interested in
I need this done asap<br>will give brainliest<br>​
lapo4ka [179]
2,4 and I am not too sure but I think -4
3 0
3 years ago
Someone please help me with this one
Anna35 [415]

Answer:

k=-2x+9

Step-by-step explanation:

-4x+6=k*2x-3

+3               +3

-4x+9=k*2x

/2x          /2x

-2x+9=k

8 0
3 years ago
Answer the questions about the dot and box plot.
ivanzaharov [21]

Answer:

a. 104

b. 102, 104, and 105

Step-by-step explanation:

a. There are 13 data points plotted on the dot line. The median lies between the 6th and 7th data point.

Thus, on the dot line, the 6th and 7th data points both fall on 104.

Therefore, median = 104

b. The dot plot shows the high temperatures that occurred more than one day are:

102, 104, and 105

5 0
3 years ago
How much money will you have if you started with $30 and put it in an account that earned 11% every year for 5 years?
Elis [28]
At the end of each year, the amount is (1 + 11%) = 1.11 times the amount at the beginning of the year. When that multiplier is applied 5 times, the result is
  $30 * 1.11^5 ≈ $50.55
6 0
3 years ago
Help me plz with this answer
Lesechka [4]
$52.50 / 42 = 1.25
$1.25 per each slice 
7 0
3 years ago
Read 2 more answers
Other questions:
  • Alicia drove at a constant speed and traveled 182.4, point, 4 miles in 3 hours. How many miles would Alicia travel in 11 hours a
    6·2 answers
  • Please Answer I don't understanddd
    9·1 answer
  • Hey guys Vsauce here I am very dum and don't now what 9+10 equals can sum mega mind help a fellow dude out and give me the answe
    14·2 answers
  • The sum of three consecutive integers is 90. What is the largest number
    9·1 answer
  • Function 1:
    15·1 answer
  • Rod is a drummer who purchases his drumsticks online. When practicing with the newest pair, he notices they feel heavier than us
    9·1 answer
  • Write the standard form of the equation of the line passing through the point -2, two and perpendicular to the line 5x-y=-4
    7·1 answer
  • Company A charges $17, plus $11 per day to rent a piece of equipment. Company B charges $33, plus $9 per day to rent the same pi
    10·1 answer
  • Solve 6x^5+x^4-4x^3-4x^2+x+6=0
    5·1 answer
  • I need help ASAP i will give brainlist
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!