Question

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​

Answer 1

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