Q.9 Five square flower beds each of sides 1 m are dug on a piece of land 5 m long and 4 m wide. What is the area of the remaining part of the land?

Area of flower square bed = 1 × 1
\(= 1 m^2 \)
Area of 5 square bed = 1 × 5
\(= 5 m^2 \)
Area of land = 5 × 4
\(= 20 m^2 \)
Remaining part of the land = Area of land – Area of 5 square bed
\(= 20 – 5 = 15 m^2 \)