What is the volume of the triangular prism below?

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Question

What is the volume of the triangular prism below?



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mackenzie2013 · Answer

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mackenzie2013 · Answer

@jim_thompson5910  One last one I didnt understand! Sorry to bug you!

driftracer305 · Answer

do u have options?

jim_thompson5910 · Answer

what's the area of the triangular base?

mackenzie2013 · Answer

@driftracer305 , no

jim_thompson5910 · Answer

any ideas on how to find the area of the triangular base?

jim_thompson5910 · Answer

keep in mind that you have to convert everything over to the same unit

driftracer305 · Answer

@Mackenzie2013 ........ just to give you a heads up....  18 is in inches*...   convert it to feet*  first...............

mackenzie2013 · Answer

Yes, 1.5 feet

driftracer305 · Answer

cool

mackenzie2013 · Answer

Okay wouldnt you do area= B*H?

jim_thompson5910 · Answer

no you have to use heron's formula http://www.mathsisfun.com/geometry/herons-formula.html

mackenzie2013 · Answer

@driftracer305  Im to dumb lol I need to learn this :$

driftracer305 · Answer

k   umm wait.. i'll make it easy for u

mackenzie2013 · Answer

@jim_thompson5910 I havent been taught that yet..

jim_thompson5910 · Answer

oh now that I look at it further, this is a right triangle

jim_thompson5910 · Answer

so yeah you can use A = (b*h)/2

jim_thompson5910 · Answer

that formula only works when you know the base and height

jim_thompson5910 · Answer

base: b = 2
height: h = 1.5

mackenzie2013 · Answer

3.0 divided by 2?

driftracer305 · Answer

yea...... find area of triangle first..... then multiply by 3

anonymous · Answer

area of triangle=1/2*b*h=1.5

anonymous · Answer

2*area of triangle+area  of square

anonymous · Answer

answer is 12?

driftracer305 · Answer

yup....  so base is 1.5  and height is 2....  so area is 1/2 * 1.5 * 2......   which equals   1.5

driftracer305 · Answer

now just  multiply height into it...  so  1.5 * 3 = ?

anonymous · Answer

@Mackenzie2013 .tell me ?

mackenzie2013 · Answer

Thank you!

driftracer305 · Answer

@svi ....... guess she got it........ lol

mackenzie2013 · Answer

Nno

mackenzie2013 · Answer

Its incorrect, sorry :$

driftracer305 · Answer

kid  look.......   just multiply  1.5 * 3 = ?

anonymous · Answer

shed ger 4.5?

mackenzie2013 · Answer

Haha is that right answer?

anonymous · Answer

So the answer is 9?

jim_thompson5910 · Answer

driftracer305 is correct, it's 4.5

anonymous · Answer

yes 4.5

driftracer305 · Answer

see @Mackenzie2013 ... all you have to do is find the area of the triangular base   and multiply it to height.............

anonymous · Answer

Kenzie, dont feel bad. THis is stuff is hard! Im still getting the hang of it too!

driftracer305 · Answer

to get area of base  formula is 1.2 * base * height............ u might get confused by seing 3 values..... but the longest side doesn't count as it is the hypotenuse......

so u r only left with  1.5  and 2   correct  @Mackenzie2013 ..??

anonymous · Answer

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