Question

if the radius of 1 m long metallic rod is 3.5 cm then how many cones of radius 1 cm​

Answer 1

Answer:

3.5 radiousok my child

Answer 2

Number of cones = 37

Step-by-step explanation:

Given,

Radius of long metallic rod = 3.5 cm

Length of the rod = 1 m =100 cm

Radius of cone = 1 cm

By considering height of cone = Length of rod = 100 cm

Volume of Cylinder =$\pi r^2h$

Volume of rod = $\pi (3.5)^2\times 100$

                       = $3850\ cm^3$

Volume of 1 Cone =$\frac{1}{3}\pi r^2h$

                             = $\frac{1}{3}\times \frac{22}{7}\times 1\times 1\times100$

                             = $104.76\ cm^3$

$\bold {Volume\ of\ rod = Number\ of\ cones \times Volume\ of\ 1\ cone}$

Number of cones = $\frac{Volume\ of\ rod}{Volume\ of\ 1\ cone}$

                              = $\frac{3850}{104.76}$

                              = 36.76

                              = 37 (approx)