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Finding Perimeter Step 1 Setup the Problem…LABEL ALL SIDES! 20 ft 15 ft 20 ft Perimeter – the distance around the outside edge of a shape or object.

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Presentation on theme: "Finding Perimeter Step 1 Setup the Problem…LABEL ALL SIDES! 20 ft 15 ft 20 ft Perimeter – the distance around the outside edge of a shape or object."— Presentation transcript:

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2 Finding Perimeter Step 1 Setup the Problem…LABEL ALL SIDES! 20 ft 15 ft 20 ft Perimeter – the distance around the outside edge of a shape or object

3 Finding Perimeter Step 2 Find the Formula…Write it down! P = s + s + s + s …

4 Finding Perimeter Step 3 Solve the Problem P = s + s + s + s P = 15 + 20 + 15 + 20 P = 35 + 15 + 20 P = 50 + 20 P = 70 ft

5 Finding Area Step 1 Setup the Problem…LABEL ALL SIDES! 20 ft 15 ft 20 ft Area – the amount of surface space inside a shape or object, measured in square units

6 Finding Area Step 2 Find the Formula…Write it down! A = bh A = lw

7 Finding Area Step 3 Solve the Problem A = l  w A = 20  15 A = 300 ft 2

8 Practice Problems Be sure to use the formulas for area and perimeter to help you make connections. If a square cake plate has an area of 100 square centimeters, what is its perimeter? What could be the perimeter of a rectangle with an area of 42 inches?

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