Question

A plastic tube of 43.2 cm long weighs 864 grams if a piece of 3.6 cm long is cut from it what will be the weight of the part left?

Answer 1

A plastic tube of 43.2 cm long weighs 864 grams.
so,864gms ÷ 43.2cm = 20.
now 20 is the weight of 1 cm.
so,43.2cm - 3.6cm = 39.6
now the weight of 1 cm is 20gms.
multiply 39.6 by 20
$39.6 \times 20 = 792$
so the answer of your question is 792 gms.
thanks for asking the question.
JAI SWAMINARAYAN.