The correct option is B 12 cm
Length of rectangle (l) =24 cm
Breadth of rectangle (b) =6 cm
Need to Find:–––––––––––––––––
Side length of the square if the area of given rectangle is equal to the area of the square
Area of the rectangle =l×b=(24×6) square cm=144 square cm
According to the question, the area of rectangle is equal to the area of some another square.
∴ Area of square =144 square cm
Also, we know that area of a square is the square of its side.
Let the side length of the square =a.
∴ Area of the square =a2
Taking square root on both the sides, we get
Hence, the side length of the square is 12 cm.
∴ Option (b.) is the correct answer.