Find the area of the kite 8ft 8ft 12ft

The function models the number of accidents per 50 million miles driven as a function

With alll of except for the 2 that i did already

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.)