The area of a wooden frame is expressed as 252cm²
The formula for calculating the perimeter of a square is expressed as:
P = 4L where
L is the side length of a square
For the outer edge of the wooden frame with a perimeter of 96cm
96 = 4L
L = 96/4
L = 24 cm
Area of the outer wooden frame = 24² = 576cm²
Similarly for the inner edge of the wooden frame with a perimeter of 72cm
72 = 4L
L = 72/4
L = 18 cm
Area of the inner wooden frame = 18² = 324cm²
Area of the wooden frame = Area of the outer frame - Area of the inner frame
Area of the wooden frame = 576 - 324
Area of the wooden frame = 252cm²
Hence the area of a wooden frame is expressed as 252cm²
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