Area and Perimeter

Today's objective was: The student will be able to evaluate area and perimeter using given information.

Todays TEKS: G.8.A  The student is expected to: find areas of regular polygons, circles, and
composite figures

Today we learned about the area and perimeter of triangles.  The area of a triangle is A=(BH)/2 and to get the perimeter you add all of the side together.  Most of us had already learned this so we did an activity where we split into groups and came up with real world uses for area and perimeter of triangles.  We then all presented our examples to the class so we could see what other groups came up with and different ways area and perimeter can be used.  After we discussed these examples, Mr. Escalantes gave us some problems where we didn't have all of the sides and we had to use the Pythagorean Theorem we learned yesterday to find the other sides to solve the problem.

Question:  I want to build a triangular flower bed in the corner of my yard with legs 4 ft and 3 ft.  Mulch comes in bags that cover 2 square feet, so how many bags do I need to cover the bed?  I also want to line the edge of the bed with daisy which come in 6 packs that cover 2 feet, so how many 6 packs of daisies do I need?