Question

what is the volume of the iron required to make a 70cm long rod of 2.1cm diameter

Answer 1

the wire is just like a cylinder so we take the question of cylinder for finding the modem of the iron required to make the rod.
hope you get the answer I think it's correct anyway thanks for your question

Answer 2

Answer:

The volume of the iron is 242.33 cm³ .

Step-by-step explanation:

Formula

$Volume\ of\ a\ cylinder = \pi r^{2} h$

Where r is the radius and h is the height of the cylinder .

As given

The volume of the iron required to make a 70cm long rod of 2.1cm diameter .

h = 70 cm

$Radius = \frac{Diameter}{2}$

$Radius = \frac{2.1}{2}$

Radius = 1.05

$\pi = 3.14$

Putting all the values in the formula

$Volume\ of\ the\ iron = 3.14\times 1.05\times 1.05\times 70$

$Volume\ of\ the\ iron =242.33\ cm^{3}\ (Approx)$

Therefore the volume of the iron is 242.33 cm³ .