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?

Question

anonymous · Answer

This is the picture that was attached to the question!

anonymous · Answer

volume of pyramid = (1/3)*area of base* height
=(1/3)*(3*3)*2=6cm^3
volume of square prism(actually rectangular prism)=l*b*h=3*3*10=90cm^3
total volume=90+6=96cm^3
:)

anonymous · Answer

Woah, I'm confused.. I lost you at the =(1/3)*(3*3)*2=6cm^3 part. Where did all of those numbers come from? lol

anonymous · Answer

area of base=area of square=base edge*base edge=3*3=9cm^2
height is 2cm given so result follows:)

anonymous · Answer

@missashleyn got it or nt?????

anonymous · Answer

No I don't get it, but it's okay..

anonymous · Answer

http://www.mathsteacher.com.au/year10/ch14_measurement/25_pyramid/21pyramid.htm try this you will get