The diagram shows a circle, centre O. The circumference of the circle is 20pi cm. Find the equation of the circle

step-by-step explanation:

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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:

i'm sorry mate, but i am not seeing any figures. i am unable to solve this for you.