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
Svet_ta [14]
2 years ago
10

PLEASE HELP ME!!! Fist person to answer gets brainly

Mathematics
2 answers:
Cerrena [4.2K]2 years ago
5 0
1st Image:-

Answer:

a) No
b) No
c) Yes
d) No

Step-by-Step Explanation:

We can use the Pythagoras Theorem to check whether it is a right triangle.

Hypotenuse^2 = 1st Side^2 + 2nd Side^2

a) 7, 12, 14

Therefore,
=> 14^2 = 7^2 + 12^2
=> 196 = 193
RHS is not equal to LHS.

Therefore, its not a Right Triangle.

b) 6, 14, 19

Therefore,
=> 19^2 = 6^2 + 14^2
=> 361 = 232
RHS is not equal to LHS.

Therefore, its not a Right Triangle.

c) 12, 35, 37

Therefore,
=> 37^2 = 12^2 + 35^2
=> 1369 = 1369
RHS is equal to LHS.

Therefore, it is a Right Triangle.

d) 4, 8, 9

Therefore,
=> 9^2 = 4^2 + 8^2
=> 81 = 80
RHS is not equal to LHS.

Therefore, its not a Right Triangle.

2nd Image:-

Answer: 352 ft^3

Step-by-Step Explanation:

r = 4 ft
h = 7 ft

Volume = πr^2h

Therefore,
= πr^2h
= π * r^2 * h
= 3.14 * 4^2 * 7
= 3.14 * 16 * 7
= 351.68

Volume = 351.68 ft^3
Rounded off = 352 ft^3

If you appreciate the effort that I put into making this answer, please mark it as Brainliest. Thank you.
zzz [600]2 years ago
3 0

Step-by-step explanation:

I only know the answer for the second task

You might be interested in
Help I need to know which one
Rufina [12.5K]

The best answer would be D

Because Rotational symmetry is a symmetric shape that can be rotated but appear the same.


7 0
3 years ago
Part A
masya89 [10]

Answer:

Part A) The area of triangle i is 3\ cm^{2}

Part B) The total area of triangles i and ii is 6\ cm^{2}

Part C) The area of rectangle i is 20\ cm^{2}

Part D) The area of rectangle ii is 32\ cm^{2}

Part E) The total area of rectangles i and iii is 40\ cm^{2}

Part F) The total area of all the rectangles is 72\ cm^{2}

Part G) To find the surface area of the prism, we need to know only the area of triangle i and the area of rectangle i and the area of rectangle ii, because the area of triangle ii is equal to the area of triangle i and the area of rectangle iii is equal to the area of rectangle i

Part H) The surface area of the prism is 78\ cm^{2}

Part I) The statement is false

Part J) The statement is true

Step-by-step explanation:

Part A) What is the area of triangle i?

we know that

The area of a triangle is equal to

A=\frac{1}{2} (b)(h)

we have

b=4\ cm

h=1.5\ cm

substitute

A=\frac{1}{2} (4)(1.5)

Ai=3\ cm^{2}

Part B) Triangles i and ii are congruent (of the same size and shape). What is the total area of triangles i and ii?

we know that

If Triangles i and ii are congruent

then

Their areas are equal

so

Aii=Ai

The area of triangle ii is equal to

Aii=3\ cm^{2}

The total area of triangles i and ii is equal to

A=Ai+Aii

substitute the values

A=3+3=6\ cm^{2}

Part C) What is the area of rectangle i?

we know that

The area of a rectangle is equal to

A=(b)(h)

we have

b=2.5\ cm

h=8\ cm

substitute

Ai=(2.5)(8)

Ai=20\ cm^{2}

Part D) What is the area of rectangle ii?

we know that

The area of a rectangle is equal to

A=(b)(h)

we have

b=4\ cm

h=8\ cm

substitute

Aii=(4)(8)

Aii=32\ cm^{2}

Part E) Rectangles i and iii have the same size and shape. What is the total area of rectangles i and iii?

we know that

Rectangles i and iii are congruent (have the same size and shape)

If rectangles i and iii are congruent

then

Their areas are equal

so

Aiii=Ai

The area of rectangle iii is equal to

Aiii=20\ cm^{2}

The total area of rectangles i and iii is equal to

A=Ai+Aiii

substitute the values

A=20+20=40\ cm^{2}

Part F) What is the total area of all the rectangles?

we know that

The total area of all the rectangles is

At=Ai+Aii+Aiii

substitute the values

At=20+32+20=72\ cm^{2}

Part G) What areas do you need to know to find the surface area of the prism?

To find the surface area of the prism, we need to know only the area of triangle i and the area of rectangle i and the area of rectangle ii, because the area of triangle ii is equal to the area of triangle i and the area of rectangle iii is equal to the area of rectangle i

Part H) What is the surface area of the prism? Show your calculation

we know that

The surface area of the prism is equal to the area of all the faces of the prism

so

The surface area of the prism is two times the area of triangle i plus two times the area of rectangle i plus the area of rectangle ii

SA=2(3)+2(20)+32=78\ cm^{2}

Part I) Read this statement: “If you multiply the area of one rectangle in the figure by 3, you’ll get the total area of the rectangles.” Is this statement true or false? Why?

The statement is false

Because, the three rectangles are not congruent

The total area of the rectangles is 72\ cm^{2} and if you multiply the area of one rectangle by 3 you will get 20*3=60\ cm^{2}

72\ cm^{2}\neq 60\ cm^{2}

Part J) Read this statement: “If you multiply the area of one triangle in the figure by 2, you’ll get the total area of the triangles.” Is this statement true or false? Why?

The statement is true

Because, the triangles are congruent

8 0
3 years ago
Frank can buy red pens in boxes of 8 and blue pens in boxes of 10. He wants the same number of red pens as blue pens. Fill in th
Anarel [89]

Answer:

Frank must buy 2 pens to have equal number of each pens

8 0
3 years ago
PLEASE I NEED HELP. I Don't get this at all:(
klemol [59]

Answer: :,)

Step-by-step explanation:

so u see were the b is in the triangle it want u to find how much b is worth

8 0
3 years ago
Someone help on the first and number
Lelu [443]
It is a mixed number because mixed mumbers have higher numerator than the denominator
3 0
3 years ago
Read 2 more answers
Other questions:
  • A goal is to get at least 10% of daily calories from polyunsaturated fats as are found in various nuts, oils, and fish. One serv
    13·1 answer
  • Y=2x+1 to a polar equation
    5·1 answer
  • What is 6743 divided by 4
    11·2 answers
  • the area of a rectangle is 14,628 square millimeters, and the width is 12 millimeters, what is the length
    6·1 answer
  • Find the scale factor between each pair of similar shapes <br>​
    10·1 answer
  • SOMEONE, PLEASE HELP I WILL GIVE THA BRAINLIST
    10·1 answer
  • How do I find the rate of change when going from 4 then 2 then 8 then 14​
    9·1 answer
  • Please solve this :)
    13·1 answer
  • Select the expressions that are equivalent to 9w + 2w.
    12·2 answers
  • Plssss helppp meeeee​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!