Answer:
Length of each side of square is 3 feet
Step-by-step explanation:
Given
Total area of the combined figure is 50.5 ft2
Total area of the combined figure = Area of Square + Area of triangle
Area of Square = Total area of the combined figure -Area of triangle
Area of Square = ft2
Let x be the side of a square, then its area would be x * x
Length of each side of square is 3 feet
In mathematics there is a rule of exponents where we can "distribute" the powers/exponents in the numerator and denominator of any expression. Therefore, given an expression as , the exponent n can be "distributed" as:
.
In our case, the power, n=11; a=7 and b=4. Thus, the expression , can be written as
.
Thus, out of the given options, option A is the correct option.