A golden bar of length 1.40 m and cross section 18 cm × 18 cm is..
A golden bar of length 1.40 m and cross section 18 cm × 18 cm is used to make circular chains of length 64 cm and diameter 6 mm. How many such chains can be made? [Take π = 3.] => 2668 or 2625 or 2659 or 2811..
