sir, in the numerical of the time period of a pendulum, why have we taken"g" as acceleration and not as force (m*a)?

Hiiiiii

Sir,You said MSD is 3.3. But you wrote it to be 3.1 cm. MayI know why you wrote 3.1 instead of 3.3?

the length,breadth and thickness of a rectangular sheet of metal are 4.234 m, 1.005 m, and 2.01cm respectively. give the area and volume of the sheet to correct significant figures.

how to solve this question

Sir B ka dimension T ka power - 1 kaysa huya