The square prism has the same measurements as a square pyramid. how many times larger is the prism than the pyramid ?

select one:
a. 3
b. 1/3
c. 2

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You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.