## BecomeMyFan=D 4 years ago The volume of a pyramid can be evaluated by using the equation V Ah 3 1 = where h is the height of the pyramid and A is the area of the base of the pyramid. The problem is to design such a triangular pyramid where the volume is V = 72 cm3 and the height is h = 12 cm. The base of the pyramid is a rectangular isosceles triangle. a) Determine the area of the base of the pyramid. Pay attention to the unit of your answer. b) Draw a picture of the base triangle of the pyramid in a proper scale.

1. sstarica

just one question, how can you have a rectangular isosceles triangle? It's either a recatangular base or a triangular one lol

2. BecomeMyFan=D

that is where i am confused LOL but thats the question

3. sstarica

Okay, if it's a rectangular base then the Area of the base = LW , so :\[V =Ah/3 \]\[A = (72)(3)/12 = 18cm^2\] Or, if the base was triangular: \[A = bh/2\] then: \[V = Ah/6\] \[A = (6)(72)/12 = 36 cm^2\] that's for part (a)

4. sstarica

do you have options? for the answers?

5. BecomeMyFan=D

no

6. sstarica

>_< then write down both lol, I'm sorry. I've never heard of a rectangular isosceles triangle ._.

7. BecomeMyFan=D

but for part a i got 18

8. sstarica

same same , so I guess it's a rectangular base after all ^_^

9. BecomeMyFan=D

ok, well i guess the person who prepared the exam was either drunk or really tired

10. sstarica

maybe, rectangular is a trick in the question and the base is triangular after all. I agree. ^^"

11. sstarica

12. sstarica

I'm telling you, there's no such thing as a rectangular triangle =_=

13. BecomeMyFan=D

she doesnt know

14. sstarica

it's either a square, rectangle or triangle. Google = she? ._. LOL!

15. BecomeMyFan=D

<-_-> yes, ofcourse google is she <-_-> What did you think.

16. sstarica

^^" Google = he? why did you announce google as FEMALE! >_>

17. sstarica

males created it!

18. BecomeMyFan=D

so? just because males created it does not mean anything, google is she, i kid you not

19. sstarica

nope, it's a HE