What is the volume of this cylinder?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

Will gve pints stars and brainliest