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A trapezium plate having two parallel sides of length 17 cm and 11 cm, and distance between them is 8 cm. Silver plating is to be done on the plate at a rate of Rs. 2 per square cm. What will be the total cost of silver plating?1. Rs. 2242. Rs. 2543. Rs. 3364. Rs. 308 |
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Answer» Correct Answer - Option 1 : Rs. 224 Given: Parallel sides of a trapezium are of length 17 cm and 11 cm Height of trapezium = 8 cm Cost of silver plating is Rs 2 per cm2 Formula used: Area of trapezium = (1/2) × Sum of parallel sides × Height Calculation: Sum of parallel sides = 17 + 11 = 28 Area of trapezium = (1/2) × Sum of parallel sides × Height ⇒ Area of trapezium = (1/2) × 28 × 8 ⇒ Area of trapezium is = 112 cm2 The total cost of silver plating = 2 × 112 = 224 ∴ The total cost of silver plating a trapezium plate is Rs. 224 |
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