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Find the volume of pyramid ABCD.

 

 Apr 25, 2022
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We can find the slant height ,s,  as follows

 

12 =  (1/2) *3 * s

24 = 3 * s

s = 8 cm

 

And since we have a 30 - 60 -90  right triangle  the  true height  is   (s/2)   =   8 / 2  =  4  cm

 

So....the volume of the pyramid  =

 

(base area  * height) / 3  =   (15 cm^2  * 4  cm)  / 3   =   60 / 3  =    20  cm^3

 

 

 

cool cool cool

 Apr 25, 2022

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