Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.

Question: Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.
[A].

10

[B].

20

[C].

30

[D].

40

Answer: Option D

Explanation:

No answer description available for this question.