Question

is required ?
15. A rectangular field is to be fenced on three sides
leaving a side of 20 cm uncovered. If the area of
the field is 680 m-, how many meter of fencing​

Answer 1

Answer:

We have: l = 20 ft and lb = 680 sq. ft. So, b = 34 ft. ∴ Length of fencing = (l + 2b) = (20 + 68) ft = 88 ft