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
hammer [34]
2 years ago
10

Math test hard math i will mark as brainlist

Mathematics
2 answers:
Lapatulllka [165]2 years ago
8 0

Answer:

Surface Area: 155.98 yd²

Volume = 145.02 yd²

Step-by-step explanation:

Ok this might take a while to explain lol. First, to find the surface area of a composite 3D figure, add the areas of each geometric figure making up the composite 3D figure.

So first, we do the area of the triangle:

Equation: height base/2 which is 3 • 5/2 = 7.5

Next, the area of the rectangular prism:

Equation: 2(width • length + height • length + height • width)

Which is, 2·(2.8 · 8 + 4.8 · 8 + 4.8 · 2.8) = 148.48

ella [17]2 years ago
4 0

Answer:

Surface Area: 155.98 yd²

Volume = 145.02 yd³

Step-by-step explanation:

Ok this might take a while to explain lol. First, to find the surface area of a composite 3D figure, add the areas of each geometric figure making up the composite 3D figure.

So first, we do the area of the triangle:

Equation: height base/2 which is 3 • 5/2 = 7.5

Next, the area of the rectangular prism:

Equation: 2(width • length + height • length + height • width)

Which is, 2·(2.8 · 8 + 4.8 · 8 + 4.8 · 2.8) = 148.48

The next step is to add the areas of the 3D figures together, so

7.5 + 148.48 = 155.98 (Surface area = 155.98 yd²)

Next, we do the volume:

To find the volume of a composite 3D figure, draw any necessary planes to view the figure as basic three dimensional figures, then: add basic figure volumes belonging to the composite shape.

I don't think it's necessary to re-draw anything, so just look at the figures as 3-dimensional shapes and find the volume the normal way.

Equation: 0.5 • base • height • length = 0.5 • 3 • 5 • 5

0.5 • 3 • 5 • 5 = 37.5 (Volume = 37.5)

Then finally, we do the volume of the rectangular prism:

Equation: width • height • length =2.8 · 4.8 · 8

2.8 • 4.8 • 8 = 107.52 (Volume = 107.52)

Finally, add the two volumes together and you are all done :)

37.5 + 107.52 = 145.02 (Volume = 145.02 yd³)

You might be interested in
What is 56% written as a ratio A)56 to 1
stellarik [79]
It c) because it 56 out of 100
5 0
3 years ago
Katie has a collection of nickels, dimes and quarters with a total value of
garik1379 [7]

10d+ 25q+5n= 805

D= n+8

Q= n+ 5



10d+ 25q+5n= 805

10(n+8)+25(n+5)+5n=805

10n+80+25n+125+5n=805

40n+205=805

40n=805-205

40n= 600

N=600/40

N= 15


D= n+8

D= 15+8

D= 23


Q=n+5

Q=15+5

Q=20


So 15 nickels ,23 dimes and 20quarters .


To check

15(0.05)= $0.75

23(0.10)=$2.30

20(0.25)=$5.00


Add it

5.00+2.30+0.75=8.05

7.30+.75=8.05

8.05=8.05

5 0
3 years ago
Please answer this question
Tanya [424]
The answer is about 1.6
7 0
3 years ago
Geometry- The base of a triangle is sqrt 18 cm and it’s height is sqrt 8 cm find it’s area.
inn [45]

Answer:

72 Centimeters

Explanation:

Formula for area: 1 /2 b · h

b = Base (18 cm.)

h = height (8 cm.)

1 / 2 Base: 9

height: 8

9 · 8 = 72

Therefore the area of the triangle is 72 centimeters

6 0
3 years ago
Select the property that allows the statement 3=x to be written x=3
laiz [17]

My guess would be distributive. i maybe be wrong so don't get mad if I'm wrong.

3 0
3 years ago
Other questions:
  • If you spend 5 hours a week studying for English and 4.5 hours studying for math what is the ratio of time spent in math to stud
    9·1 answer
  • Plz help me asap will mark brainliest if right
    8·2 answers
  • What is 8.57 in fraction or mixed number as a decimal
    11·1 answer
  • easch cube inside the rectangle prism has a edge length of 3/4 inch what is the volume of the rectangle prism
    15·1 answer
  • Please help with this question ASAP!!
    5·1 answer
  • A cylindrical swimming pool has a diameter of 16 feet and a height of 3 feet. How many gallons of water can the pool contain? Ro
    11·2 answers
  • Help me you dont have to do all of them but if you do pls i will give you the brainiest
    11·1 answer
  • Which of the following inequalities orders the numbers
    12·1 answer
  • Help0000000000000000000
    7·1 answer
  • Find the equation of the line which is parallel to y=2x-1 and passes through (4,11)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!