Can someone solve these, please?

Which expression is equivalent to 4 square root 6 divided by 3 root 2

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.