Question

the volume of a 5m long cylinder iron rod is 6930cm³. find its diameter​

Answer 1

Answer:

The diameter of cylinder iron rod is 4.2 cm

Step-by-step explanation:

height of cylinder h = 5m = 500 cm

Volume of the cylinder V= 6930 cm³

We know the volume of the cylinder is

$V=\pi r^{2} h\\6930=\pi \times r^2 \times 500\\r^2=\frac{6930}{\pi \times 500} \\r^2=4.411\\r=2.1 cm$

The diameter of cylinder iron rod is d = 2r

d= 2 x 2.1 cm = 4.2 cm

The diameter of cylinder iron rod is 4.2 cm