Acylindrical water tower has a volume of 20,000π ft3. what is its height if it has a radius of 20 ft?

volume = PI x r^2 x h

volume = 20,000

radius = 20 ft

20,000 = PI x 20^2 x h

20,000 = 3.14 x 400 x h

20,000 = 1256 x h

h = 20,000 / 1256 = 15.9235 feet

round answer as needed

your answer would be 10x - 1

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: