Pls people can u help me with math

What should i say so i can switch my instrument

In russian churches the number of domes usually matches the number of altars. but this church has only one altar dome, and 21 symbolic ones. what normal construction device does this church lack?

What is the key to finding personal fulfillment in your job a. to have high salary b. to engage in lifelong learning c. to interview people in the field d. to reevaluate your career choice annually