0-7 Perimeter

Perimeter (measured in linear units) The distance around a figure (The sum of all the side lengths) P(Rectangle)= 2 𝑙+𝑤 or 2𝑙+2𝑤 P(Parallelogram)= 2 𝑎+𝑏 or 2𝑎+2𝑏 P(Square)= 4𝑠 P(Triangle)= 𝑎+𝑏+𝑐

Example 1 pg. P23 Perimeters of Rectangles and Squares Find the perimeter of each figure. 1.) A rectangle with a width of 3 ft. and a length of 13 ft. 13 ft. 3 ft. 2.) A square with a side length of 11 millimeters. 11 mm

Example 1 pg. P23 Perimeters of Rectangles and Squares Find the perimeter of each figure. 1.) A rectangle with a width of 3 ft. and a length of 13 ft. 32 feet 13 ft. 3 ft. 2.) A square with a side length of 11 millimeters. 44 millimeters 11 mm

Example 2 pg. P24 Perimeters of Parallelograms and Triangles Find the perimeter of each figure. 1.) 2.)

Example 2 pg. P24 Perimeters of Parallelograms and Triangles Find the perimeter of each figure. 1.) 2.) 26 inches 28 centimeters

Circle A set of points in a plane that are equidistant from a given point. Center- the given point Radius- the distance from the center to any point on the circle. 𝑟= 1 2 𝑑 Diameter- the distance across the circle through the center 𝑑=2𝑟 Circumference- the distance around the circle 𝐶=2𝜋𝑟 or 𝜋𝑑

Example 3 pg. P24 Circumference Find the circumference of each circle to the nearest tenth. 1.) The radius is 9 inches. 2.) The diameter is 12 millimeters 3.)

Example 3 pg. P24 Circumference Find the circumference of each circle to the nearest tenth. 1.) The radius is 9 inches. ≈56.5 inches 2.) The diameter is 12 millimeters ≈37.7 millimeters 3.) ≈18.8 centimeters

0-7 pg. P25 1-20