Find the indicated measure in ABCD. Explain your reasoning.
Please help me I don’t understand:/

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

Math it's appreciated. (picture provided)

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