1 -7 1 The absolute value is?

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

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.

Asap! i'm not good math and i'm lost.