Question

all lengths cannot be measured in metres.why ​

Answer 1

Answer:

this is the answer

Explanation:

if we have a pencil we can't measure it's length in meters we need to measure it in cm first and than convert it into m.

Answer 2

WE CAN MEASURE ALL LENGTHS IN JUST ONE STANDARD unit of length but when it comes to large distances , calculating in metre is lengthy, so we take multiples of it like kilometres.