Question

The lengths of two bodies measured by a meter scale are L1 = (20 0.5) cm and L2 =(15 0.2 )cm.
calculate
a)Sum of these lengths.
b)Difference between these length

Answer 1

Explanation:

Answer:

1) (20+-0.5)+(15+-0.2)

=(20-0.5)+(15-0.2)

=19.5+14.8

=34.3

2)(20-0.5) - (15-0.2)

=19.5 - 14.8

=4.7