How many coins 1.75 cm in diameter
and 2 mm thickness must be melted to
form a cuboid of dimensions 11 cm x 10 cm x 7 cm?
Take π= 22/7
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Answer:
volume of cuboid= n× volume of each coin
11×10×7= 22÷7×175÷200×175÷200×22÷10 n
n= 1600÷11
n=145.4
n= approximately 145
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