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
user100 [1]
2 years ago
9

What is the suface area of a rectangular prism that measures 2cm × 5cm × 8cm?​

Mathematics
2 answers:
kotykmax [81]2 years ago
6 0

Answer: 132 hope that helps

Step-by-step explanation

Fastest way to do it A=2(wl+hl+hw)=2·(5·2+8·2+8·5)=132

kirill [66]2 years ago
4 0

Answer:

132 cm^{2}

Step-by-step explanation:

A rectangular prism has 6 sides in total. We need to find the area of each side and add the areas together to find the total surface area.

Each side has an opposite that's parallel and on the opposite side of the prism, so there are 3 different sides whose areas are to be multiplied by 2.

First: let this side be SIDE A:  5 x 8 = 40 cm^{2}

Second, let this side be SIDE B:  8 x 2 = 16 cm^{2}

And thirdly, let this side be SIDE C:  2 x 5 = 10 cm^{2}

These are the areas of 3 of the the sides of the prism. The other 3 are identical.

Now to find the Total SA, we add all of them together,

SA   =    2 x (SIDE A) + 2 x (SIDE B) + 2 x (SIDE C).

       =    (2 x 40) + (2 x 16) + (2 x 10)

       =    80 + 32 + 20

SA   =    132 cm^{2}

You might be interested in
Find the roots of y= -3^2 - 5x +1
Reil [10]

Answer:

The right answer is the second

Step-by-step explanation:

D=b^2-4ac

D=25+12

D=37

7 0
3 years ago
If f(x) = 1/9 x - 2, what is f-1 (x)
Snowcat [4.5K]

f(x) =  \frac{1}{9} x - 2 \\

f( - 1) =  \frac{1}{9} ( - 1) - 2 \\

f( - 1) =  -  \frac{1}{9}  - 2 \\

f( - 1) =  -  \frac{1}{9}  -  \frac{18}{9}  \\

f( - 1) =  -  \frac{19}{9}  \\

6 0
3 years ago
Thomas solved the equation by completing the square. x2−10x+27=0 <br> show work
Ber [7]
(x-3)(x-7)=0
x=3,7
hope this helps!
4 0
3 years ago
Read 2 more answers
To the nearest whole number, what is the surface area or the right triangular prism
Andrej [43]

Answer:

502 Square Meters

Step-by-step explanation:

Surface Area is the sum of the areas of all the surfaces. There are 5 surfaces in total, so we find each surface area and find total Surface Area.

Shown Below:

Bottom Surface is a rectangle, so area is length * width = 10 * 16 = 160

Back Surface is a rectangle, so area is 6 * 16 = 96

Top (front) surface is a rectangle so area is 11.6 * 16 = 185.6

Left and right sides are 2 triangles, so are would be  0.5(base * height) for each. So,

Left triangle = 0.5 * 10 * 6 = 30

Right triangle = 30

Sum of all the surfaces = 160 + 96 + 185.6 + 30 + 30 = 501.6

Rounded to nearest whole number, that is 502

The surface area = 502 m^2

6 0
3 years ago
Multiply
dsp73
The answer is A. 2x^2+11x^3+12x^2-10x-8

6 0
3 years ago
Other questions:
  • the sun produces 3.9 x 10^33 ergs of radiant energy per second. how many ergs of radiant energy does the sun produce in 2.45 x 1
    15·2 answers
  • Please help me fast!!!!
    10·2 answers
  • The sum of twice a number and 17 is 55. Find the number. Explain also if possible
    10·2 answers
  • X+7=y in substitution
    12·1 answer
  • A spinner has 5 equal sections marked 1 through 5. What is the probabilty of not landing on 4?
    13·2 answers
  • Hey, can you please help me with this? thanks btw :)
    13·2 answers
  • Can someone pls help with this
    13·1 answer
  • These are the means and standard deviations for samples of building heights
    12·1 answer
  • What is the slope of the line shown above?​
    6·2 answers
  • 5547x94<br> what is the answer
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!