a park has grass and sand. find the area of the part with grass. (sides meet at right angles.)

Explanation:

Step1: Calculate total area

The total rectangle has length $6$m and width $(1 + 2+1)=4$m. The area of a rectangle is $A = l\times w$, so the total - area $A_{total}=6\times4 = 24$ square meters.

Step2: Calculate sand - area

The sand part is a rectangle with length $4$m and width $2$m. The area of the sand part $A_{sand}=4\times2 = 8$ square meters.

Step3: Calculate grass - area

The area of the grass part $A_{grass}=A_{total}-A_{sand}$. So $A_{grass}=24 - 8=16$ square meters.

Answer:

16