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Total area of the decoration is 198 cm² and the total cost is 396 rupees .
Step-by-step explanation:
Length of the rectangle along with the decoration is 28 cm.
Breadth of the rectangle along with the decoration is 11 cm.
Area of the rectangle along with the decoration is ,a = ( 28 × 11 ) = 308 cm²
Length of the rectangle without the decoration is ( 28 - 2×3 ) = 22 cm
Breadth of the rectangle without the decoration is ( 11 - 2×3 ) = 5 cm
Area of the rectangle without the decoration is , b = ( 22 × 5 ) = 110 cm²
∴ Area of the decoration is, ( a - b ) = ( 308 - 110 ) = 198 cm²
∴ Total cost of the decoration is ( 198 × 2 rupees ) = 396 rupees
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