Find the diameter of a circle with a radius of 13 ft. A
6.5 ft

B
26 ft

C
81.64 ft

D
530.66 ft

B

Step-by-step explanation:

A radius is half of a diameter so multiply by 2

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: