I need help finding the volume

520/3 cubic feet

Step-by-step explanation:

You can divide this figure into 2 parts for easy calculation; a pyramid and a rectangular prism. You can find the volume of the rectangular prism by multiplying together all of the side lengths. 3*4*10=120 ft^3. To calculate the volume of a pyramid, you simply need to use the formula , which in this case is . Adding the 120 cubic feet from earlier, you get a total of . Hope this helps!

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl