Question

Radius of a solid aluminium cylinder is 3.5 cm and its height is 16cm. How many discs of diameter 1.4cm and thickness 0.2 cm can be made from this cylinder melting it ?
One who gives first gets Brainest!!!1

Answer 1

Step-by-step explanation:

• BOTH solid aluminium cylinder & disc are in shape of cynlinder.

VOLUME OF CYLINDER

• π × Radius² × Height

VOLUME of solid aluminium cylinder

• π × 3.5² × 16
• 616 cm³

VOLUME of disc

• π × 0.7² × 0.2
• 0.308 cm³

A C C O R D I N G T O Q U E S T I O N

VOLUME of solid aluminium cylinder = number of disc × VOLUME of disc

• 616 cm³ = Number of disc × 0.308 cm³
• Number of disc = 2000