Question

the perimeter of a square os 28 cm .find its one side ,area, diagonal​

Answer 1

perimeter = 28 cm

one side = 28 / 4 = 7

area = 7*7 = 49

diagonal = 1.73 * 7

                  = 12.11

hope it helps

Answer 2

Perimeter of square = 28 cm.

Given-

= P of square = 4 a ( a= side )

= P = 28

= So, according to question,

= 4 a = 28

=> To find side -

= $a = \huge\frac{28}{4}$

= 7 cm.

Area of square = $S\times S$

=> To find area  -

= $7\times 7$

 = $49 \:cm^2$

=> To find diagonal -

= $a\huge\times\sqrt2$

= $7\huge\times\sqrt2$

= $1.73\huge\times 7$

= 12.11 cm