Question

please give step by step explanation​

Answer 1

Answer:401

Step-by-step explanation:

Assume silver coin to be a cylinder

Dimensions of silver coin

Height= 2 mm = 0.2 cm

Diameter= 1.75 cm

Radius= Diameter/2 = 1.75/2 = 0.875 cm

Dimensions of cuboid

Length= 5.5 cm

Breadth= 10 cm

Height = 3.5 cm

Volume of one silver coin

= pi *(r^2)*h

= 3.141(0.875)(0.875)(0.2)

= 0.481 cm^3

Volume of cuboid

= l * b * h

= 5.5(10)(3.5)

= 192.5 cm^3

No. of coins required to form cuboid

= Volume of cuboid/Volume of one coin

= 192.5/0.481

= 400.207

= 401 (rounded to next nearest number)

The answer is 401