Question

A rectangle x cm long y cm wide, is made 3cm longer. the area in cm² has now increased by________​

Answer 1

Answer:

3y

Step-by-step explanation:

Length = x

Breadth = y

Area = xy

New length = x + 3

New area = (x + 3)(y) = xy + 3y

Change in area = xy + 3y - xy = 3y

Answer 2

Answer:

Step-by-step explanation:

Hey

Idk if this is correct ..

Area of the rectangle is :L*B

Therefore,

L=x+3

B=y

Area:

3+x*y