100 points! ap calculus ab related rates

#2. a circle of radius r has a square circumscribed about it as shown in the figure to the right. if the radius is increasing at the rate of 2 cm/sec, and the area of the shaded region is increasing at the rate of 8 cm^2/sec, what is the value of r in cm?

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

215.92 dollars is the answer

sure i'm up for it

step-by-step explanation:

i think its 7.6

if so your welcome