The area of width 3y+4
put y=1
3×1+4=7
width=7
the area of length 2y-1
if y=1
2×1-1=1
area=bh
7×1=7
The area is a quantity that describes the extent of an area on a plane or curved surface. The area of a planar region or planar region refers to the area of a shape or planar layer, and surface area refers to the area of an open surface or boundary of a three-dimensional object.
The area is the area occupied by a 2D figure. That is, it is a quantity that measures the number of unit squares that cover the surface of a closed figure. The standard unit of area is the square unit, commonly expressed in square inches, square feet, and so on.
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