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
geniusboy [140]
2 years ago
12

30. Find the volume of the figure below. 21 km 15 km 19 km 9 km

Mathematics
1 answer:
Kazeer [188]2 years ago
8 0

Answer:

See below ....none of your answer choices  'fit'

Step-by-step explanation:

Break it into two pieces....a triangular prism and a square pyramid

prism volume = (area) * length

                      ( 1/2 base * height)     *  length  

     Use pythagorean theorem to find height of triangular prism = 12

                            1/2 * 12 * 9   * 21 = 1134 km^3

Pyramid volume = 1/3 base * height =

               =   1/3  *   (9*21)    *    7 = 441 km^3

Summed = <u>1575 km ^3  </u>        

You might be interested in
Item 8
disa [49]

Answer:

452.39 mm^2

Step-by-step explanation:

Area of a circle = \pi r^2

Here r = 12mm

Therefore, Area= \pi x 12^2 = 452.389342...

Round to required degree of accuracy = 452.39mm^2

Hope this helps

8 0
2 years ago
What is the answer to part a and b??? please help
lozanna [386]
Dan is taller because 5/2= 1 1/2 and 1 1/2= 1 2/4.
7 0
2 years ago
In triangle ABC, mA=35, mB=40, and a=9. Which equation should you solve for b?
Elenna [48]

Answer:

  B.  sin35/9=sin40/b

Step-by-step explanation:

The law of sines tells you ...

  sin(A)/a = sin(B)/b

Filling in the given values, you get ...

  sin(35°)/9 = sin(40°)/b

7 0
3 years ago
Read 2 more answers
In the accompanying diagram of circle O, point O
densk [106]

The number of degrees in the first quadrant is 45 degrees.

<h3>Coordinates of a circle</h3>

The formula for calculating the angle in the first quadrant If the coordinates of point J are (\frac{\sqrt{2}}{2}, \frac{\sqrt{2}}{2})

tan \theta = \frac{y}{x}\\tan \theta =\frac{\frac{\sqrt{2}}{2} }{\frac{\sqrt{2}}{2} }\\tan \theta =1\\\theta = tan^{-1}1\\\theta = 45^0

From the calculation above the number of degrees in the first quadrant is 45 degrees.

Learn more on circles here: brainly.com/question/24375372

5 0
2 years ago
-2 + (-3) + 5 please help me with this question and also step by step
never [62]

Answer:

0

Step-by-step explanation:

just calculate the simole way

7 0
3 years ago
Read 2 more answers
Other questions:
  • The quadrilateral ABCD on a coordinate plane has the following characteristics.
    5·1 answer
  • Owen solves the equation below and his steps are shown. When he plugged his solution back into the original equation, he did not
    8·1 answer
  • I need help on this problem pleeeaaassseee help​
    13·1 answer
  • 121 is 55% of what number
    8·1 answer
  • Your estimate of the market risk premium is 9%. The risk-free rate of return is 4% and General Electric has a beta of 0.7. Accor
    5·1 answer
  • Someone please help me? Answe is NOT 4/7 , tried that already
    15·1 answer
  • Getting doubles when two dice are rolled.
    15·2 answers
  • Please answer number 8 8 don't understand
    11·1 answer
  • Functions A,B and C are linear functions. Some values of function A are shown in the table. Function B has y-intercept of (3,0)
    12·1 answer
  • Please I need help ASAP
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!