## crystal1 2 years ago A rectangular prism is truncated removing 10% of its height. The original height of the prism was 100 meters and it has a length of 4 meters and a width of 20 meters. What is the volume of the truncated prism? 800 m3 4,200 m3 3,800 m3 7,200 m3

1. sasogeek

well what is 10% of 100 meters? if you know that, take that from 100 meters and then use the result to calculate the volume :) you have all the other values needed ;)

2. sasogeek

got it?

3. crystal1

nop

4. sasogeek

ok so let's do this step by step :) 10% of 100 = $$\large \frac{10}{100} * 100 = ?$$ what's the answer?

5. crystal1

let me see

6. sasogeek

are u there?

7. crystal1

yes

8. crystal1

my answer is b

9. sasogeek

well unfortunately not :) i'll help you out here :)

10. sasogeek

original height = 100 removed height = 10% x 100 the new height = original height - removed height |dw:1345839694695:dw|

11. sasogeek

now you have the new height, you have the width, you have the length. volume = height * width * length put in the values and tell me what you get :)

12. crystal1

thanks

13. crystal1

90000

14. sasogeek

nooo lol :P

15. sasogeek

height x width x length 90 x 4 x 20 = ?

16. crystal1

got it thansk

17. sasogeek

what was ur answer?

18. crystal1

c

19. sasogeek

nope

20. crystal1

i cant im stupid

21. sasogeek

|dw:1345840608495:dw|

22. sasogeek

ugh!, well u get it ;) do u?