Question

Electricity The power P, in watts, that a circular solar cell produces and radius of the cell in centimeters are related by the square root equation


`r = \sqrt{ (p )/(0.02\pi) }`
about how much power is produced by a cell with a radius of 12 cm?​

Answer 1

9.05 W

Step-by-step explanation:

The given formula is
`r=\sqrt {\frac {P}{0.02\pi}}` where r is in centimeters and P is in Watts

Making Power, P the subject from the above formula

`P=0.02\pi r^(2)`

Substituting r with 12 cm then

`P=0.02\pi 12^(2)= 9.047786842  W\approx 9.05 W`