A wire having resistance 20 ohm is bent to make a closed square. What is the resistance across the diagonal of square?

Plss anybody know how to do this? ? i need the answers from a through d

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?