Question

1) the AREA of the square is 900cm square . find the perimeter of the square.

2) a piece of a wire of lenght 12.8 cm is bent to form a square. find the area of the square formed.

Answer 1

1. 120 cm

2. 10.24 cm^2

Explanation:

1. if area of a square = 900 cm

then the perimeter = 4(x)

area of square = x^2

900 = x^2

x = 30

perimeter = 4(30)

perimeter = 120 cm

2. piece of wire 12.8 cm in length, bent into a square

12.8/4 = 3.2

area of square = a^2

3.2^2 = area

area = 10.24

Answer 2

1) 4√900 = 4(30) = 120 cm.

2) (12.8/4)² = 3.2² = 10.24 cm.²