Question

A hall msr 40m*24m. Find the NUMBER of carpets of size 6m*4m required to cover it's floor after leaving a boarder of width 2m all around its wall from inside

Answer 1

After leaving the border,
Area of the hall to be carpeted
$= (40 - 4)(24 - 4) = 720$
Area of each carpet
$= 6 \times 4 = 24$
No. of carpeta required =
$\frac{720}{24} = 30$