4m a rectangular sheet tin of size 100cm,80cm are cut 4 square side 10cm from each corners find area of remaining side.

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To find the area of the remaining side, we first need to calculate the area of the rectangular sheet of tin.

The original size of the rectangular sheet is given as 100 cm by 80 cm. Therefore, the area of the rectangular sheet can be found by multiplying the length and width:

Area of rectangular sheet = Length x Width
= 100 cm x 80 cm
= 8000 cm²

Now, we need to cut four squares with sides of 10 cm each from the corners of the rectangular sheet. By doing this, we are removing four smaller rectangular sections from the sheet.

Since each square has a side length of 10 cm, the area of each square can be found by squaring the side length:

Area of one square = Side length x Side length
= 10 cm x 10 cm
= 100 cm²

Since we are cutting four squares, we need to subtract the combined area of the four squares from the total area of the rectangular sheet:

Area of remaining side = Area of rectangular sheet - Area of four squares
= 8000 cm² - (4 x 100 cm²)
= 8000 cm² - 400 cm²
= 7600 cm²

Therefore, the area of the remaining side is 7600 cm².