The distance from Betelgeuse to Earth is known to be between 400 and 700 light years. How many meters is 400 light years?
What is 400 x 19 x 1025)? Drag and drop each of my steps in order to help
us write an estimate in scientific notation, then click DONE.
3.6 x 1018
STEP 1
STEP 2
(3.6 x 103) x 1015
STEP 3
Remember that light
travels at a speed of
9.460730473 x 1015
3.6 x (103 x 1015)
STEP 4
meters per year
(400 x 9) x 1015
ESTIMATE
3600 x 1015
DONE