Antonio is on the track team. he ran the 400-meter dash in 1 minute and 20 seconds. the graph shows his performance on the 400-meter hurdles. how much faster was his average speed in the 400-meter dash?

Tiara buys the pizza shown below: a circular pizza is shown. the edge of one slice is marked ab. what does the curve ab represent?

Can someone me with these two circle theorem questions asap?

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.