Question

If the length of the side of a square is 11 cm, then find its area. Also, find the total length of its boundary.

• A. 100 cm${}^2$; 20 cm
• B. 121 sq cm; 44 cm
• C. 131 sq cm; 50 cm
• D. 150 sq cm; 34 cm

Answer 1

The correct option is B 121 sq cm; 44 cm

Given:
Length of the side, a = 11 cm
Area = a${}^2$ = 11${}^2$ = 121cm${}^2$
Total length of its boundary, perimeter = 4a = 4 x 11 = 44 cm