Dmitri's mom is making him a yent to use for backyard camp outs with his friends. how much material will dimitri's mom need for the tent, including the floor

The answer is 21.4.

Step-by-step explanation: Thank me later :)

step-by-step explanation:

the true ones are a b and d

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c