Sophia has 13 shapes. There are triangles, rectangles, and hexagons. Four shapes has 3 straight sides. Two shapes are hexagons. How many shapes are rectangles?

7

step-by-step explanation:

the answer would be 7

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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