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Verified Answer :

JMcMannis

the area of the rectangle is 48 m

aachen

Answer:

\(A=48\ m^2\)

Step-by-step explanation:

Given that,

Width of the rectangle, b = 4 m

The length of the rectangle, l = 3b = 3(4) m = 12 m

Let A is the area of the rectangle. It is given by :

\(A=l\times b\)

\(A=12\ m\times 4\ m\)

\(A=48\ m^2\)

So, the area of the rectangle is \(48\ m^2\). Hence, this is the required solution.