Question

amys backyard has cement and grass. find the area of the part with cement. (sides meet at right angles.)

Explanation:

Step1: Find the area of the large rectangle

The large rectangle has length $6$ m and width $5$ m. The area formula for a rectangle is $A = l\times w$. So, $A_{total}=6\times5 = 30$ square - meters.

Step2: Find the area of the grass - part rectangle

The grass - part rectangle has length $3$ m and width $3$ m. Using the area formula $A = l\times w$, we get $A_{grass}=3\times3=9$ square - meters.

Step3: Calculate the area of the cement part

The area of the cement part is the area of the total rectangle minus the area of the grass part. So, $A_{cement}=A_{total}-A_{grass}=30 - 9=21$ square - meters.

Answer:

21