Answer:
The area has decreased a 10%.
Step-by-step explanation:
Lets suppose that the the sides of the square are 1 cm, so the area is 1 [tex]cm^{2}[/tex].
so if the square has been reduced 40% in widht, the new widht is 60% of what it was before. that means 0.6cm
then it was increased 50% on height, so the new height is 1.5 cm
The area of a rectangule is (height*widht)
A=(0.6*1.5)
A=0.9 [[tex]cm^{2}[/tex]]
The area of 0.9 [tex]cm^{2}[/tex] represent the 90% of the first area, so the area was reduced a 10%. (100%-90%).
