Question

Find the number of points 1.5 CM in diameter and 0.2 CM thick to be melted to form a right circular cylinder of height 12cm and diameter 4.5 CM

Answer 1

hlo mate

As the coins are in the form of thin cylinder

Volume of each coin = π×(0.75)²×0.2 =0.1125π cm³

Volume of melted cylinder = π× (2.25)²× 10 = 50.625π cm³

number of coin required = (volume of melted cylinder)/(volume of each coin)

                                 = 50.625π/0.1125π = 450 coins

MARK AS BRAINLIEST