Answer:
\(4\frac{3}{4}\) m
Step-by-step explanation:
1 meter = 100 centimeters
50 cm = \(\frac{50}{100} m\)
50 cm = \(\frac{1}{2} m\)
Original length = \(5\frac{1}{4}=\frac{21}{4} m\)
Decrease the original length by 50 cm
So, Length = \(\frac{21}{4} -\frac{1}{2}\)
= \(\frac{21-2}{4}\)
= \(\frac{19}{4}\)
= \(4\frac{3}{4}\)
Hence new length is \(4\frac{3}{4}\) m
