The perimeter of the shape will be

The sides lengths and height are doubled which means
a = 7(2) = 14 inches
b = 4(2) = 8 inches
h = 6(2)= 12 inches
There the new perimeter will be

1. changes in perimeter will be

The area of the shape will be

the area of the double of the side lengths and height will be

The change in area will be
