Question

a rectangular piece of paper of width30 cm and length 77 cm is rolled along with its with proof, cylinder what is the volume of cylinder so formed.

Answer 1

the length of the rectangle =77 cm would be the circumference of its bases.
so, 2πr=77
$r = \frac{77}{2\pi}$
the height of the cylinder=30cm
Vol of the cylinder=πr²h=
$\pi \times \frac{77}{2\pi} \times 30$
$= 77 \times 15$
$= 1155 {cm}^{3}$

Answer 2

Step-by-step explanation:

Ohm's Law is a formula used to calculate the relationship between voltage, current and resistance in an electrical circuit. To students of electronics, Ohm's Law (E = IR) is as fundamentally important as Einstein's Relativity equation (E = mc²) is to physicists. E = I x R