Question Number 101767 by 175mohamed last updated on 04/Jul/20

Commented bymr W last updated on 04/Jul/20

a CD can cover a wall area of  2×(D/2)×((√3)/2)×D=(((√3)D^2 )/2)  number of CDs needed to cover  6m×4m wall area:  ((6×4 m^2 )/((((√3)×0.12^2 )/2)m^2 ))≈1425

Commented bymr W last updated on 04/Jul/20