Question

the volume of a 1 m iron rod is 1386 Cubic cm find its diameter

Answer 1

Answer:

Step-by-step explanation:

Given :

Volume of rod = 1386 cu.cm

height = 1 m or 100 cm

Volume of rod= πr²h sq. units (Rod is in shape of cylinder)

1386 = 22/7*r²*100

⇒ r² = (1386*7)/2200

⇒ r² = 9702/2200

⇒ r² = 4.41

⇒ r = √4.41

⇒ r = 2.1 cm

Diameter = 2.1 ×2 

Diameter = 4.2 cm

Hope it helps...