Observe the composite figure below.
The bottom shape is a square prism with base edges of 3 cm and a height of 10 cm. What is the surface area of the composite figure if the top shape is a right pyramid with a height of 2 cm?

Question

Observe the composite figure below.
The bottom shape is a square prism with base edges of 3 cm and a height of 10 cm. What is the surface area of the composite figure if the top shape is a right pyramid with a height of 2 cm?

anonymous · Answer

Figure vv

hoblos · Answer

it is similar to what we did before

surface area of the square prism part = 4(3)(10) + 3^2

surface area of the pyramid part = 2(3)(s)

s^2= 2^2 + (1.5)^2
s=2.5

hoblos · Answer

and the final answer is 144

anonymous · Answer

I got that answer too but it wasn't one of the options

anonymous · Answer

96 cm3
		90 cm3
		60 cm3
		6 cm3

hoblos · Answer

the units are cm3!!!
is it volume??

anonymous · Answer

It asks for the surface area.. I'm officially confused! Why are the answers cubed? O_O

anonymous · Answer

Maybe it's a typo and it's actually asking for volume?

hoblos · Answer

so
volume of square prism = 10(3)^2
volume of the pyramid = (1/3)(2)(3)^2

add them up
and the answer would be  96 cm3

anonymous · Answer

Great! Thank you!

hoblos · Answer

yw

anonymous · Answer

thanks