Question

What is the surface area of the following rectangular prism? Express your answer in square millimeters.





4,392 mm2

8,784 mm2

2,880 mm2

5,760 mm2

Answer 1

figure?

Answer 2

k so just multiply the 3 values together..... tell me wat u get?

Answer 3

2,880

Answer 4

great work.........

Answer 5

@driftracer305 How would you find the volume?

Answer 6

The volumes always comfuse me

Answer 7

V= BH

Answer 8

Is that right?

Answer 9

yup

Answer 10

You guys do notice that the base is in CM and not mm? right?

Answer 11

wait wat........?

Answer 12

k lemme re-check... good eye @Bookreader15

Answer 13

ahh gotcha...... i stand corrected.....

Answer 14

it is B......... lemme tell you why........

Answer 15

since it is surface area....... it is always 2(ab+bc+ac).......... and here you have cm... so 15 cm = 150mm ........... now if you plug in all values and evaluate it equals 8784mm

Answer 16

So can you explain how to find the volume?

Answer 17

in volume.... if you have a rectangular prism.... just multiply l*b*h....... as for triangular prism multiply area of base and height so (1/2*b*h) * (height of prism).......

Answer 18

So youd take what we just found a secound ago and multiply it by the hright? Or am I having a brain fart?

Answer 19

no @Bookreader15 ...... we found the surface area.... it has nothing to do with multiplying it to height again.........

Answer 20

Im so dumb and confused..

Answer 21

k lemme attach a file to help u out.....

Answer 22

:)

Answer 23

can u see it guys @Bookreader15 and @Mackenzie2013 ...?? hope it helps

Answer 24

I see the formula but im comfused where the area comes from?

Answer 25

Area of base...?

Answer 26

I am so dumb...

Answer 27

area of base is just a multiplication of 2 values without the height of prism........

Answer 28

So using this problem as an example, youd take 150 and times it by 15 to get the volume?

Answer 29

no...... for volume just multiply 3 values together remember.... check my notes for volume of rectangular prism

Answer 30

so wat would it be?

Answer 31

2,880

Answer 32

Thats correct. Im pretty sure!

Answer 33

what happened to your good eye @Bookreader15 ......... did u forget to convert 15cm to mm?

Answer 34

@Bookreader15 ......... u r close by an tiny-bit..... super close...cmon you can do it

Answer 35

Shat, okay I got this!

Answer 36

k so final answer @Bookreader15 ?

Answer 37

The answer would be 28,800

Answer 38

From my calculator is what Kenzie said ^.^

Answer 39

@Bookreader15 and @Mackenzie2013 .... m so glad to tell you guys u finally got it.. !! :D

Answer 40

finally i will sleep without nightmares.............lol

Answer 41

mackenzie tell me how to find 2880