Volume Prisms and Cylinders Lesson 10 7 p
- Slides: 20
Volume: Prisms and Cylinders Lesson 10 -7 p. 538
Volume l The volume of a three-dimensional figure is the amount that fills the figure. The volume is given in cubic units.
Volume l Consider this prism. If we cut it into cubic units, it would look like this: 2 in 3 in 4 in
Volume l Consider this prism. If we cut it into cubic units, it would look like this: 2 in 3 in 4 in
Volume l Consider this prism. The common formula for finding Volume of a rectangular prism is V = lwh where l is the length, w is the width and h is the height. 2 in 3 in 4 in
Volume l Consider this prism. In this example, V = lwh = 4 (3) (2) = 24 cu. in. 2 in 3 in 4 in
Volume Another way to look at this problem is take the area of the base (meaning bottom of the figure) and multiply it by the height. Solving in this way lets us apply the method to other shapes as well. Area of the base = l x w therefore, area of the base x height is the volume. 2 in 3 in 4 in
Example l Let’s try this method with a triangular prism 6 ft Volume = area of the base x height The base is the triangle. A = bh 2 9 ft 8 ft A = (8) (6) 2 A = 24 sq. ft. Volume = area of the base x height = 24 x 9 = 216 cu. Ft.
Try This l Find the volume: 4 in 5 in. 6 in. 4 ft 3 ft 6 ft
Try This l Find the volume: 4 in 5 in. 6 in. 120 cu. in. 4 ft 3 ft 6 ft
Try This l Find the volume: 4 in 5 in. 6 in. 120 cu. in. 4 ft 36 cu. ft. 6 ft
Example l This works for finding the volume of cylinders also. 3 m Volume = area of the base x height. Area of base = 5 m = 3. 14 x 32 = 28. 26 sq. m Volume = area of base x height. = 28. 26 x 5 = 141. 3 cu. meters
Try This l Find the volume of the cylinder: 11 ft 5 ft.
Try This l Find the volume of the cylinder: 11 ft 5 ft. 1, 899. 7 cu. ft.
l. PA# l. P. 540 #1 -16
l. Bellwork # l. HW, red pen, book on desk.
Agenda: l. PA# l. Workbook pp. 86 & 87 l. PA# l. Workbook p. 89
Agenda: l. PA# l. Workbook p. 89
l. Please have the following on your desk: ¡Tuesday Folder – take home quizzes ¡HW, red pen, book on desk.
Agenda PA# P. 552 -553 #1 -15, 22 -24 Correct at home Ch. 10 Test tomorrow.
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