Answer:
A. 6cm B. 10cm
Explanation:
The rectangle
Lenght = 18cm and width = 2cm
Area = l x w
Area = 18 x 2 = 36
Ifna square has area of 36cm², all sides are equal
X² = 36
X = square root of 36
X = 6cm
If a square as a Perimeter as the rectangle
Perimeter = 18 +18+ 2+2 =40cm
If Perimeter of square is 40cm and all 4 sides are equal
X =40/ 4
X= 10cm