Using the digits 0-9 at most one time each, fill in the boxes to great three expressions that are exactly the same/equal to each other

Can someone me with this problem . show your work .

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

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.)