Two sticks of lengths 12.132 cm and 10.2 cm are placed end to end. Find their total length with due regard to decimal places.

Explanation

Length of first stick=12.132 cm (5 significant figures)
Length of second stick=10.2 cm (3 significant figures)
`therefore` Total length of two sticks = `12131+10.2=22.332`
The answer should be rounded off with least number of significant digits after the decimal
`therefore` Total length of two sticks will be 22.3 cm