Activity › Discussion › Math › Mensuration(Class 7) › Reply To: Mensuration(Class 7)
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Let, the breadth of the rectangle is, b = x cm<div>
the length of the rectangle is , l = x + 8 cm
The perimeter of the rectangle is, P = 64 cm
Perimeter = 2(length + breadth)
64 = 2(x + 8 + x)
64/2 = 8 + 2x
32 = 8 + 2x
32 – 8 = 2x
24 = 2x
x = 24/2
x = 12
b = x = 12 cm
l = x + 8 = 12 + 8 = 20 cm
Hence, The length of the rectangle is 20 cm and the breadth of the rectangle is 12 cm.
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