A triangular prism was sliced parallel to its base. What is the shape of the cross section shown in the figure? HURRY

Volume of cylinder with a radius of 8cm and height of 25 cm

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?