Answers

2016-01-29T17:04:15+05:30
Side of the square = 3.8 m

Area of the original square = side ²
                                            = 3.8²
                                             =14.44 m²

Now the side is increased by 50 cm
so the side = 3.8+ 0.50 + 0.50
                   = 4.8 m

Area of the new square = side ²
                                       = 4.8²
                                       =23.04 m²

Now the area increased = New area - original are
                                        =23.04 - 14.44
                                        = 8.6 m²
0
the side is not increased by 50cm, rather it is stripped around the sqaure, therefore the total increased side will be 100cms
2016-01-29T17:08:58+05:30
From the image:
the new square's dimensions are: 4 m 80 cm per side
area of old square is 380*380 cm (converted it first)
that is 144400 cm sq.
that is 1444 m sq.

the area of new square is 480 *480 cm (converted it first)
that is 230400 cm sq.
that is 2304 m sq.

the increase in area is new square's area - old square's area
that is 2304-1444 m sq.
that is 860 m sq.
or 86000 cm sq.

over and out!


0
sorry the units are wrong!
this is correct
thank me atleast for the diagram plz
so i am correct?
Apart from units your logic is right.