Question

if 45 metre of a uniform rod weight 171 kg what will be the weight of 12 metre of same rod.​

Answer 1

Answer:

The weight of 12 m of rod is 45.6kg

Step-by-step explanation:

The question is a simple problem of unitary method

The weight of a uniform 45m rod is given to be 171 kg

we need to find the weight of 12m of rod

If 45 m of a uniform rod weighs 171kg

then weight of 1m rod is $\frac{171}{45}$kg

Thus the weight of 12 m of rod is $\frac{171}{45} .12=\frac{19}{5} .12=\frac{228}{5} =45.6kg$

The weight of 12m rod is 45.6kg