C. 10 cm
To understand the given problem use the formular of area.
Hence, area is the length and width of the object in unit squared.
Mathematically expressing, a = l x w
Since a = l x w
a = lw unit squared
Given:
Area = 112 cm2
Square root of Area = Square root of 112 cm2
Area = 10.58 cm
Check:
Area = (10.58 cm)^2
Area = 111.9 / 112