Just ignore number 7 it’s 8 i need on, it tried to attempt it myself but it wasn’t working for me

1 hm=100m

1.5hm=150 meters each tower is from each other.

500km(1000m/1km)=500,000 meters the wire covers.

500,000/150 = 3333.33 towers. Just because we want to be safe and have enough towers we can say we have 3334 towers in the span of 500,000 meters.

B)

1kV=1000V

500kV(1000V/1kV)= 500,000 V

There are 1.2 volts in a AA battery so we divide 500,000/1.2 = 416666.67 times larger

1. 3

2. 4

3. 1

hope this ! have a great day.

-wfz

goog may have it for you