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
algol13
3 years ago
15

A right rectangular prism has edges of 2 1/4 in, 1 1/2 in and 1 1/2 in. How many cubes with lengths of 1/4 in would be needed to

fill the prism? What is the volume?
Mathematics
1 answer:
Zielflug [23.3K]3 years ago
5 0

The volume of a rectangular prism is (length) x (width) x (height).

The volume of the big one is  (2.25) x (1.5) x (1.5) = <em>5.0625 cubic inches</em>.

The volume of the little one is  (0.25)x(0.25)x(0.25)= 0.015625 cubic inch

The number of little ones needed to fill the big one is

             (Volume of the big one)  divided by (volume of the little one) .

       5.0625 / 0.015625  =  <em>324 tiny cubies</em>

=================================================

Doing it with fractions instead of decimals:

The volume of a rectangular prism is (length) x (width) x (height).
Dimensions of the big one are:

   2-1/4  =  9/4
   1-1/2  =  3/2
   1-1/2  =  3/2

   Volume = (9/4) x (3/2) x (3/2) =
 
                 (9 x 3 x 3) / (4 x 2 x 2)  =

                           81 / 16  cubic inches.

          As a mixed number:    81/16  =  <em>5-1/16 cubic inches</em>

Volume of the tiny cubie = (1/4) x (1/4) x (1/4) =  1/64 cubic inch.   

The number of little ones needed to fill the big one is

             (Volume of the big one)  divided by (volume of the little one) .

                 (81/16) divided by (1/64)  = 

                     (81/16) times (64/1)  = 

                             5,184/16  =  <em>324 tiny cubies</em>.


You might be interested in
5th grade math. Correct answer will be marked brainliest.
Marat540 [252]

Answer:

0.065

Step-by-step explanation:

64.9 / 1000 = 0.0649 --> 0.065

5 0
2 years ago
Read 2 more answers
A student’s work to simplify and combine radicals is shown below. Select the statement which best applies to the sample mathemat
jeka94
Your answer is incorrect. You forgot to get the square root of 25 and 4. Answer should be 16√2

we can only subtract radicals that are the same. At first glance, 4√50 - 2√8 are not the same, so they are not likely to be subtracted. However, each radical can still be simplified.

4 √50 = 4 √25 * 2 = 4 * 5 √2 = 20 √2
2 √8   = 2 √4 * 2   = 2 * 2 √2 =   4 √2

Now that the radicals are the same. then you can subtract the numbers.

20 √2 - 4 √2 = 16√2

4 0
2 years ago
Donna earns $1,404 per week at her job. However, 19% of her income gets taken out in taxes, and 12% of her income gets taken out
adoni [48]

Answer: $980

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Jerry King is a server in a restaurant that pays a salary of $43 per day. He also averages tips of 18% of his total gross food o
tatyana61 [14]

Answer:

His total gross pay for the week is $588.25.

Step-by-step explanation:

Consider the provided information.

Jarry has a salary of $43 per day and he worked for 4 days.

Thus, the salary of 4 days is:

4 × $43= $172

The average tips is 18% of his total gross food orders.

Last week he had total food orders of $2,312.5. Therefore, the total tips he received is:

2312.5 \times(\frac{18}{100})

2312.5 \times(0.18)

416.25

Total tips he received is $416.25.

His total gross pay for the week = The salary of 4 days + Total tips he received.

His total gross pay for the week = $172 + $416.25

His total gross pay for the week = $588.25

Hence, his total gross pay for the week is $588.25.

5 0
2 years ago
0.563 wrote as a fraction
vitfil [10]
Wrote as a fraction 563/1000
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the simplified form of the expression? ( m^-1 m^5 / m^-2) ^-3       
    11·2 answers
  • Write the equation of the line through the points (2, 3) and (-5, 4).?
    8·1 answer
  • What term describes the set of all possible input values for a function
    8·1 answer
  • Please give me the answer to number 2 you don’t need to explain it just give me the answer
    7·1 answer
  • Help! 1. Baby Yoda wants some soup, so he wanders around trying to find some. He starts at the bottom of the grid, and ends clos
    12·2 answers
  • How many solutions does the equation<br>have?<br>|p – 4| = -5​
    10·1 answer
  • Iverse of f (x)= 3x​
    12·1 answer
  • Eva tried to evaluate an expression step by step.
    13·1 answer
  • Write the number for fourteen million eighty thousand.
    14·2 answers
  • Find a formula for the nth term in this
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!