How do you find the rate of change in a parabola?

I need to know ASAP

This is about circle theorems. someone asap : (

Find the missing dimension! need asap! tiny square is a =3025 in ²

2. using calculations based on a perpetual inventory system, determine the inventory balance altira would report in its august 31, 2021, balance sheet and the cost of goods sold it would report in its august 2021 income statement using the average cost method. (round "average cost per unit" to 2 decimal places.)