3. What is the total surface area of the square pyramid in square inches?
А A 203 in?
B 210 in ²
11.5 in
7 in
c 198 in 2
D 2066 in2

i belive those are the ones that are under 90 degreese.

step-by-step explanation:

rectangles are made up of 4 right angles, which means that a side and a base meet perpendicular to one another.   their slopes then have to reflect perpendicular slopes.   perpendicular slopes are opposite reciprocals of one another.   for example, if the slope of one line is +2/3, then the perpendicular slope to that would be -3/2.   so we look for that combination in our choices.

all of them satisfy that condition (so what's the question, i guess? )

the answer for the question that you are asking is 4