Question

three measuring rods are 15cm 30cm and 40cm long .find the least distance which be measured by them completely .with solution​

Answer 1

Answer:

1.2 m

Step-by-step explanation:

Given  

three measuring rods are 15 cm 30 cm and 40 cm long .find the least distance which be measured by them completely .with solution

ANSWER

Length of measuring rods are 15 cm, 30 cm and 40 cm respectively.

So length of rods measured exact number of times = LCM of 15, 30 and 40 cm.

So now LCM of 15,30 and 40 will be

5 x 3 x 2 x 2 x 2 x 1 = 120 cm = 1.2 m

The required length of rod will be 1.2 m