Help please with the digging deeper section … ASAP !

d

step-by-step explanation:

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

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm

a

step-by-step explanation: