Idk, just kind of confused with this one.
Don't Judge me ;)

The bottom shape is a square prism with base edges of 3 cm and a height of 10 cm. What is the volume of the composite figure if the top shape is a right pyramid with a height of 2 cm?
Answer
96 cm^3
90 cm^3
60 cm^3
6 cm^3

Question

Idk, just kind of confused with this one.
Don't Judge me ;)

The bottom shape is a square prism with base edges of 3 cm and a height of 10 cm. What is the volume of the composite figure if the top shape is a right pyramid with a height of 2 cm?
Answer
		96 cm^3
                 90 cm^3
		60 cm^3
		6 cm^3

anonymous · Answer

attachment

unklerhaukus · Answer

The volume of the composite figure is just the sums of the volumes of the prism and the pyramid

unklerhaukus · Answer

The volume of the prism is the product of its dimensions,

anonymous · Answer

Yea i get, but when i get the answer, it's something higher then the answer above

unklerhaukus · Answer

What volumes did you get for the prism and what did you get for the pyramid?

anonymous · Answer

oh i see what i did wrong, I forgot to times the the total of the pyramid by half, so the answer is A? Sorry about that -.-.

unklerhaukus · Answer

by half?

anonymous · Answer

i mean by 1/2

unklerhaukus · Answer

The volume of the pyramid is 1 third of the product of its dimentions

anonymous · Answer

oh.. then i guess i dont get it.. I got 90cm for the square prism and 6cm for the pyramid. So that is incorrect?

unklerhaukus · Answer

Right the prism is 90cm^3  
And the pyramid is $$\frac{18cm^3}{3}=6cm^3$$

anonymous · Answer

so the answer is A then ?

unklerhaukus · Answer

yes

anonymous · Answer

ok, thanks so much for your help. I understand it now.

unklerhaukus · Answer

anytime