Question

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

Explanation:

Step1: Calculate the area of the large rectangle

The formula for the area of a rectangle is \(A = length\times width\). The length of the large rectangle is \(7\) m and the width is \(5\) m. So, \(A_{large}=7\times5 = 35\) square meters.

Step2: Calculate the area of the grass - part (small rectangle)

The length of the grass - part (small rectangle) is \(4\) m and the width is \(4\) m. Using the area formula \(A = length\times width\), we get \(A_{grass}=4\times4=16\) square meters.

Step3: Calculate the area of the cement - part

Subtract the area of the grass - part from the area of the large rectangle. \(A_{cement}=A_{large}-A_{grass}\). So, \(A_{cement}=35 - 16=19\) square meters.

Answer:

\(19\)