Ten identical mementos is made by a school. If base base PQRS is silver plated from the front side at the rate of 20per cm square. Find the total cost of silver plating of 10 mementos.
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Step-by-step explanation:
Rs 10380 is total cost of the silver plating of 10 mementos
Step-by-step explanation:
Right angle triangle have sides
8 + 5 = 13 cm & 6 + 5 = 11 cm
Area = (1/2) * 13 * 11
= 71.5 cm²
Area of Arc segment = (90/360) π 5²
= 19.6 cm²
Area of front side to be silver plated = 71.5 - 19.6
= 51.9 cm²
Cost of Silver plating = Rs 20 per cm²
Cost of 1 = 51.9 * 20 = 1038 Rs
Cost for 10 = 10 * 1038 = 10380 Rs
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