Question

Arun wants to measure the length of straight line using a ruler but his ruler was from out at the edge so he started at the marking of 1cm the end point of the line was at 12cm find the correct length of a straight line ​

Answer 1

Answer:

11cm

Explanation:

error in measurement = 1cm

he skip 1 cm so correct measurement  =  measured - error

                                                            =12-1  cm

                                                           =11 cm