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
Debora [2.8K]
2 years ago
11

I will be marking brainliest please help me with these questions.

Mathematics
1 answer:
krek1111 [17]2 years ago
7 0

Answer/Step-by-step explanation:

1. To find the area of the shaded region, you'd find the area of the white rectangular shape, next, find the area of the whole triangular shape, then find the difference of their areas to get the area of the shaded region. Thus, the formula to use would be:

Area of shaded region = area of triangle - area of rectangle

Area of shaded region = ½*base*height - length*width

1. a. Volume of triangular prism = area of triangular base * height of prism

Volume of triangular prism = ½bh * H

Where,

b = 6 m

h = 4 m

H = 8 m

Substitute

Volume of prism = ½*6*4*8

Volume of prism = 96 m³

b. Volume of sphere = ⁴/3πr³

Where,

r = 9 cm

Substitute

Volume = ⁴/3*π*9³

Volume = ⁴/3*π*729

Volume ≈ 3,053.6 cm³ (nearest tenth)

2. Use Pythagorean theorem to find the height of the cone

radius of the cone (r) = ½(16) = 8 cm

Slant height (l) = 11 cm

height (h) = ?

Using Pythagorean theorem, we have:

h = √(l² - r²)

Substitute

h = √(11² - 8²)

h = √(57)

h ≈ 7.5 cm (nearest tenth)

b. Volume of the cone = ⅓πr²h

where,

r = 8 cm

h = 7.5 cm

Volume = ⅓*π*8²*7.5

Volume = 502.7 cm³ (nearest tenth)

You might be interested in
The Ratio of boys to girls at a middle school is 3:2. If the school has 400 people how many will be boys?
Mekhanik [1.2K]
You have to divide 400 by 5. That will equal 80. Since the ratio is 3:2 Just multiply 3 by 80 then 2 by 80! :-) 

You can check it by simplifying it again.
5 0
3 years ago
Read 2 more answers
Ill give brainliest I really need help but all of the answers are on chegg so does anyone have a chegg account that I can use?
Archy [21]

Answer:

No, but you could just ask the question here....

Step-by-step explanation:

Sorry, i don't.

What's da Q?

4 0
3 years ago
A car starts with a dull tank of gas. After driving around 5he city, 1/7 of the gas has been used. With the rest of the gas in t
Sati [7]

Answer:

\frac{2}{7}

Step-by-step explanation:

Given:

A car starts with a dull tank of gas

1/7 of the gas has been used around the city.

With the rest of the gas in the car, the car can travel to and from Ottawa three times.

Question asked:

What fractions of a tank of gas does each complete trip to Ottawa use?

Solution:

Fuel used around the city = \frac{1}{7}

Remaining fuel after driving around the city = 1 - \frac{1}{7}

                                                                         =    \frac{7 - 1}{7}  = \frac{6}{7}

According to question:

As from the rest of the gas in the car that is \frac{6}{7}, the car can complete 3 trip to Ottawa  which means,

By unitary method:

The car can complete 3 trip by using = \frac{6}{7} tank of gas.

The car can complete 1 trip by using =  \frac{6}{7} \div 3

                                                             =\frac{6}{7} \times\frac{1}{3}

                                                             =  \frac{6}{21}

                                                             = \frac{2}{7} tank of gas

Thus, \frac{2}{7} tank of gas used for each complete trip to Ottawa.

5 0
3 years ago
Why is 1/3 bigger than 4/5
UkoKoshka [18]
1/3 is in fact NOT larger than 4/5. 4/5 is larger than 1/3.
4 0
3 years ago
Read 2 more answers
Write the following in algebraic expression.<br><br> u decreased 17
gregori [183]

Answer:

you divied 7 by 14 which is 2

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • Help me with this question please
    8·2 answers
  • How do you change your level like mine says middle school but I don't know how to change it?
    14·2 answers
  • A conjecture and the paragraph proof used to prove the conjecture are shown.
    10·2 answers
  • Rewrite this number in scientific notation 54.8 times 10’3 <br> Look at attachment down bellow
    13·1 answer
  • The measure of the​ angle's supplement is 60
    6·1 answer
  • Can a triangle have side lengths of 12 feet, 6 feet, 3 feet? HURRY PLZ!!?
    11·2 answers
  • Write an equation of the line that passes (-3,3) and is perpendicular to the line 2y=8x-6
    8·2 answers
  • Ryan also earns money by selling colored watch bands with the watches he sells. The linear expression 100x – 50 models Ryan's ad
    9·1 answer
  • 3.5.2 Test (CSI) Question 6 of 12 Use the area of the rectangle to find the area of the triangle. 5 ft 10 ft O A. The area of th
    12·1 answer
  • Help. Do not take advantage of the points, please.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!