Question

The volume of a circular iron rod of leanght 1 m is 3850cm.find its diameter.​

Answer 1

Answer:

The diameter of the circular iron rod is 7 cm.

Step-by-step explanation:

Given length = 1m = 100cm

Volume of circular iron rod = 22/7×r²×h

3850 = 22/7×r²×100

= 2200r²/7

2200r² = 3850 × 7

r² = 3850 × 7 / 2200

= 12.25

r = root square of 12.25

r = 3.5

Therefore, diameter = 2r = 2×3.5 = 7(answer).