1. DO NOW!!! (1 st ) 1.A rectangular prism has length 4 cm, width 5 cm, and height 9 cm. a) Find the area of the cross section parallel to the base. b) Find the area of the cross section perpendicular to the base.

2. DO NOW!!! (1 st ) 1.A square based pyramid has a square base with sides of 7 cm. The pyramid has a height of 6 cm. a) Find the area of the cross section that is perpendicular to the base and that runs right through the middle of the pyramid.

3. DO NOW!!! (3 rd ) 1. A circle with a radius of 5 cm is rotated 360 degrees to form a 3D shape. a) What is the 3D shape? b) What is the volume of this 3D shape? 2. A rectangle with a base of 12 cm and a height of 8 cm is rotated 360 degrees to form a 3D shape. a) What is the 3D shape? b) What is the volume of this 3D shape?