Need for these two questions, any is appreciated

Determine the relationship of ab and cd given the following points

Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?

Acylinder has volume 45π and radius 3. what is it’s height?