PLEASE HELP!! Jo measures the length of a rope and records her measurement correct to the nearest ten centimetres.

The upper bound for her measurement is 12.35 m.
Write down the measurement she records.

What is the square root of 45? (step by step working plz)

1foot = 12 inches; 1 yard = 3 feet

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.