exam Maths Puzzle Numerical Ability

If the speed of light is 3.00 x 10^8 m/sec, how long does it take to travel 2.29 x 10^11?

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exam Other Question

Evaluate without a calculator
1. sec(210 degrees)

2. tan(-pi/4) My directions on my homework say " Use a ruler to measure the length of each line segment to the nearest millimeter.I have measured it but I do not know how to convert it into millimeters."