Slide 1 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Perimeter Section9.2.

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Presentation transcript:

Slide 1 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Perimeter Section9.2

Slide 2 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the perimeter of the rectangle. 10 m length width 4 m

Slide 3 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Perimeter of a Rectangle length width length width

Slide 4 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the perimeter of the rectangle with a length of 8 inches and a width of 5 inches. 8 in. 5 in. The perimeter is 26 inches.

Slide 5 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Perimeter of a Square side In symbols, P = 4 · s

Slide 6 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the perimeter of a square tabletop if each side is 4 feet long. P = 4s = 4(4) = 16 feet The perimeter of the tabletop is 16 feet.

Slide 7 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Perimeter of a Triangle In symbols, P = a + b + c side b side a side c

Slide 8 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the perimeter of the triangle if the sides are 4 meters, 7 meters and 9 meters. 4 meters10 meters 9 meters

Slide 9 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the perimeter of the following figure. 6 in. 13 in. 30 in.

Slide 10 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example A rectangular lot measures 60 feet by 120 feet. Find the cost to install fencing around the lot if the cost of fencing is $1.90 per foot. Find the perimeter of the lot.

Slide 11 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Using Formulas to Find Circumference Circumference of a Circle center radius diameter

Slide 12 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the circumference of the circle. 10 yd