4. A communications tower is located at the top of a steep hill, as shown. A guy-wire is to be attached to the top of the tower and to
the ground, 165 m downhill from the base of the tower. The
height of the tower is 80 m, how long is the guy-wire?

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm

x = 12

y = 1

for the points!