Math, asked by rainachublu5775, 1 year ago

Tha mass of an aluminium rod varies directly with its length. If a 16 cm long rod has a mass of 192 g ,find the length of a rod whose mass is 105 g

Answers

Answered by sushiladevi4418
90

8.75 cm

Step-by-step explanation:

The mass, say m, of an aluminum rod varies directly with its length(l).

Rule of direct proportionality says,

\frac{m}{l} = k

\frac{192}{l6} = 12

k = 12

The mass of a rod = 105g

then, \frac{m}{l} = k

\frac{105}{l} = 12

l = \frac{105}{12} = 8.75 cm

Thus, length of a rod is 8.75 cm

Answered by Aɾꜱɦ
34

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8.75cm

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