79 1/3 u²
1) Considering that we have a Mixed Number, let's turn that into an improper fraction to make our calculations easier.
Keep the denominator and multiply by the whole number and add to the numerator:
[tex]11\frac{1}{3}=\frac{3\times11+1}{3}=\frac{34}{3}[/tex]2) So now we can plug those dimensions into the Area of a rectangle:
[tex]S=b\times h\Rightarrow S=\frac{34}{3}\times7\Rightarrow S=\frac{238}{3}[/tex]Turning that into a Mixed Number we can write, dividing 238 by 3
Note that the quotient will be the whole number, the remainder the numerator, and the divisor the denominator.
Hence, the answer is 79 1/3 u²
