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
nignag [31]
3 years ago
5

Calculate the surface area and volume of the shape below.

Mathematics
1 answer:
pav-90 [236]3 years ago
4 0

Surface area

Let's calculate the surface area of the rectangular block. It has length, width and height of L = 15, W = 5, H = 8. The surface area is going to be

SA = 2*(LW+WH+LH)

SA = 2*(15*5+5*8+15*8)

SA = 470

This is without the cylinder attached to the top surface. If we account for that, then we'll have to subtract off the area of the circle covered up which is

pi*r^2 = pi*3^2 = 9pi = 28.27433 approximately

So 470-28.27433 = 441.72567 is the approximate surface area of the rectangular block after we subtract off the circular portion covered up by the cylinder.

----------

The lateral surface area of the cylinder is approximately

2*pi*r*h = 2*pi*3*4 = 24pi = 75.39822

Which adds onto the top circular area of 28.27433 to get 28.27433+75.39822 = 103.67255

Meaning that 103.67255 is the surface area for the cylinder portion. Again we don't worry about the bottom portion as it's not part of the outer surface.

---------

Overall, the total surface area of this compound 3D figure is

(surface area for rectangular portion) + (surface area cylinder portion) = 441.72567+103.67255 = 545.39822

When rounding to the nearest whole number, the total surface area is about 545 square cm

<h3>Answer: 545 square cm</h3>

============================================================

Volume

The rectangular block has volume L*W*H = 15*5*8 = 600 cubic cm

The cylinder has volume pi*r^2*h = pi*3^2*4 = 113.0973355 approximately

Add the two volumes to get 600+113.0973355 = 713.0973355 and this rounds to 713. We don't have to do any subtraction in this section.

<h3>Answer: 713 cubic cm</h3>
You might be interested in
A box of cereal is 13 ounces. About how many grams is it?
DaniilM [7]

1 ounce = 28.3495 grams

13 x 28.3495 = 368.544 grams

 round answer as needed

5 0
3 years ago
What angles are supplementary?
vova2212 [387]
8 and 5 and I hate IXL ugh
5 0
3 years ago
In a game, there are 12 identical balls of which seven are red and five are green.
Alex

Answer:

its number 2 and if its a mutable answers writ 3 also

7 0
3 years ago
I am a graph that records each piece of data above a number line
dolphi86 [110]
That type of graph is called a line plot
8 0
3 years ago
Read 2 more answers
Someone please help me I suck @ simplifying thank you
Degger [83]
Or the other is 1/6
3 0
3 years ago
Read 2 more answers
Other questions:
  • You buy 3.17 pounds of apples, 1.25 pounds of pears, and 2.56 pounds of oranges. What is your total bill rounded to the nearest
    14·3 answers
  • 14. Write an equation of the line using the slope and y-intercept.<br> m = -5, b = -1
    7·1 answer
  • The Mulraney's home has 2,550 square feet of living space. A contractor is building an addition to their home that will increase
    9·2 answers
  • Please help ASAP I NEED THIS TOMORROW!!!
    11·1 answer
  • Step by step HELP I HAVE A BAD GRADE IN THIS CLASSSS HELPP
    13·1 answer
  • What is the slope of side ED?<br><br> -6<br> -4/5<br> 2/7<br> 1/6
    12·2 answers
  • Evaluate 13+6/y when y = 6​
    12·1 answer
  • Why is the petrol price cheaper at coastal than inland
    6·2 answers
  • Round 290951.867863 to the nearest hundred.
    6·2 answers
  • Heather has divided ​$5900 between two​ investments, one paying 9%, the other paying 4​%. if the return on her investment is ​$3
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!