Question

A solid cylinder whose height is 12 cm and its base radius is 10.5 cm is melted to form a wire of diameter 2 mm what will be the length of wire so obtained?

Answer 1

Answer:

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Answer 2

Answer:

13200cm²

Step-by-step explanation:

Given....

For the cylinder .

H = 12cm

R = 10.5cm

For the wire which is in a cylindrical shape..

D = 2mm

R = 2mm/2

=1mm

Now convert it in cm

= 1mm/10

= 0.1cm

Th find length .  

volume of cylinder = volume of wire

Now convert it in cm .

$\pi r^{2} h = \pi r^{2} h$

$\frac{22}{7}$ × $10.5^{2}$ × 12 = $\frac{22}{7}$ × 0.1² × $h$

$cancel \pi$

$10 .5$ × $10.5$ × $12$ = $0.1$ × $0.1$ × $h$

1323 = 0.1 × $h$

$\frac{1323}{0.01}$ = $h$

13200cm³ = $h$

Therefore,  length of wire is 13200cm³

hope it helps you....