On a bookshelf, there are five different mystery books and six different biographies. how many different sets of four books can emilio choose if two of the books must be mystery books and two of the books must be biographies?

49%

step-by-step explanation:

when you realize that you dont know just realize i just took a test and im so smart

the answer is:

the lateral area is equal to

to find the lateral area of the square pyramid, first we need to find the perimeter of the base, and then, find the lateral area using the following formulas:

where,

s, is the base length

slant height, is the height of a the side of the pyramid

we are given:

now, calculating the perimeter of the base, we have:

then, calculating the lateral area:

hence, we have that the lateral area is equal to

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