Question

A metal pipe that is 3m long was found to weight 9kg. How much would 1 cm of the same metal pipe weigh?​

Answer 1

Answer:

Given, the weight of 3m long pipe = 7.6kg

Using unitary method in which first we find the value of one unit and then the value of the required number of units.

∴

Weight of 1m long pipe =

7.6

3

kg

∴

Weight of 7.8m long pipe =

7.6

3

×

7.8

=

19.76

kg

Hence, the weight of 7.8m long pipe is 19.76kg.

Step-by-step explanation:

I hope it is helpful for you.