1. Warm ups 4-10-08 Mark received a huge piece of chocolate shaped like a trapezoid that covered 98 square inches of his desk for his birthday!! Write two equations that could be used to determine the height of the chocolate. 16 in ? in 12 in 98 28 1 28h 196 2. 196 = 28h 1. 98 = 14h

2. Volume Formulas Cube V = s s s Volume is side x side x side

3. Volume Formulas Rectangular Prism L L L w w w h h h V = lwh or Volume is length x width x height or Volume is AREA OF THE BASE x height or Volume is Bh V= Bh

4. Volume Formulas Triangular Prism b h A= bh / 2 b h B B h h V= (bh / 2)h or Volume is Area of triangular base x height of prism or V= Bh

5. Volume Formulas Cylinder Volume is AREA OF CIRCLE BASE x height Or v=Bh r h V = 3.14 x r x r x h V=Bh

6. Something about cylinders… On a cylinder net……. One dimension of the rectangle MUST be equal to the CIRCUMFERENCE of the base(s) C=21 d=7 7 21 !!!!!NOT equal to the diameter of the base!!!!!!!!!!!! Okay!