How do you calculate the radius of the pole to produce a perfect lawn?

The production line where you work can assemble 5 appliers every 30 minutes at this rate how long should it take the line to assemble 125 amplifiers

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.