If each garden takes 20 minutes to clean, it will take him (20 x 4) to clean the gardens.
20 x 4 = 100
80 minutes
or 1 hour and 10 minutes.
Hey there!!
The formula for the area of a square - s²
where s = side
s² = 345
s = √345
s = 18.57 ft
Fence shall be three sides
So 18.57 × 3
The required answer = 55.71 ft
Hope my answer helps!
I believe it’ll be 4/10 = 12/20