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

Answer 1

Answer:

9.05 W

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

$P=0.02\pi 12^{2}= 9.047786842 W\approx 9.05 W$