3 years ago

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

Mathematics

1 answer:

Kazeer [188]3 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

Rae earns $60 for playing music on saturday nights at the local coffee house. she makes an average of $5.25 in tips per hour. wr

insens350 [35]

Okay. So for this equation, she would make $60, plus $5.25 in tips each hour. So for this, she would get $60 + 5.25h. Plug in 4 hours, and she would make $21 off of tips, plus the $60, which brings her up to $81 total. The answer is C.

6 0

3 years ago

I need help with this one and the others .

timurjin [86]

20 and 0 are your answers

4 0

3 years ago

The inverse, f'(x), of f(x) =

astraxan [27]

Step-by-step explanation:

Given

$f(x) = \frac{x + 5}{x}$

$f(2) = \frac{2 + 5}{2} \\ = \frac{7}{2}$

Now

${f}^{ - 1} (x) = \frac{5}{x - 1}$

${f}^{ - 1} (2) = \frac{5}{2 - 1} \\ = \frac{5}{ 1} \\ = 5$

Hope it will help :)❤

7 0

3 years ago

There are 4 green marbles and 7 silver marbles in a bag. You randomly choose one of the marbles. What is the probability of choo

Aliun [14]

Answer:

4/11

Step-by-step explanation:

there are 4 green out of 11 total

5 0

3 years ago

Read 2 more answers

Marc decides put molding around his bathroom floor. The room is 6’ x 8’. How much molding will he need? Answer: _ feet (type the

viktelen [127]

48
explanation : 6 x 8 = 48

6 0

3 years ago

Read 2 more answers