Courtney purchased a candle, shaped like a cylinder, with a height of 6 in. and a diameter of 7 in. She started burning the candle at home where she forgot to blow out the candle. When she came
back from the corner store, she noticed that of the candle had burned. What is the approximate
volume of the candle that she has left to burn, rounded to the nearest hundredth?

it's both, now can you answer my most recent question?

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.