the length and breadth of the room were measured and area calculated as 600sq.m. (l+B=50) later found the meter rod that had used as an error 5cm i.e actual length of the rod ws 95cm instead of 100cm. find the correct area of the room

1 answer

The room was measured to be 20 by 30 m.

So, just multiply each dimension by 0.95 to find the true area.

Or, just do it in one step: 600 * 0.95^2