This means 5 meters/20 steps = x/1,000 steps. 20 times 50 is 1,000, so 5 times 50 is 250 meters. 5/20 can be also reduced to 1/4 = x/1000. Use cross products rule to get 4x = 1,000. Divided both sides by 4 to get x = 250 meters.
2L +2W=160 100+ 2W=160 subtract 100 from each side 2W=60 divide by two each side W=30 use the formula L×W=Area or 50×30 which equals 150 the are of the pasture is 150 feet²