Do Now 4/17/13 Take out HW from last night. Copy HW in your planner. Text p. 362, #1-24 all, 27, 32, 33 Copy HW in your planner. Text p. 366, #7-15 all, 24, 29 Text p. 370, #7-17 all Quiz sections 9.1-9.3 Friday In your journal, find the perimeter of the figure below. 8 cm 10 cm

Homework Text p. 362, #1-24 all, 27, 32, 33 1) 18 m 2) 24 in. 3) 32 ft 11) 48 cm 12) 30 ft 13) 44 m 14) 26 in. 15) 8 ft 16) 36.4 cm 17) 110 cm 18) 18.8 m 19) 32 in. 20) about 29 in. 21) 2.8 m; 5.7 m 22) 13.4 yd; 42.1 yd 23) 5.3 in.; 33.3 in. 24) 1/2; 1 27) 96 ft 32) D 33) 28

Objective SWBAT find the area of a circle and the area of irregular figures

Section 9.2 “Area of a Circle” To find the area of a circle, square the radius of the circle and multiply by pi ( ). Area = Radius Diameter

Try It Out!! Find the area of the following circles. A). B). 3 m 4 m

Find the area of the shaded region of the circle. Use 3. 14 for  Find the area of the shaded region of the circle. Use 3.14 for  . Round your answer to the nearest hundredth. The measurement of the radius of the circle is 2.4 cm. A = r2 2.4 cm A = 3.14 · 2.42 A  3.14 · 5.76 A  18.09 Since of the circle is shaded, divide the area of the circle by 4 and subtract the answer from the entire area. 18.09 ÷ 4 = 4.52. 18.09 – 4.52 = 13.57. 3 4 The area of the shaded region of the circle is about 13.57 cm2.

Section 9.3 “Area of Irregular Figures” Composite Figure figure that is irregular made up of simple geometric shapes, such as triangles, rectangles, and circles

Estimate the area of the figure. Each square represents 1ft².

Find the area of the figure. Use 3.14 for pi. Break the figures apart into simple shapes: circles, rectangles, squares, or triangles. Find the area for each part. Then find the sum. 15 m 35 m Area of rectangle Area of semi-circles Total 176.6 m² + 525 m² 701.6 m²

Find the area of the figure. Break the figures apart into simple shapes: circles, rectangles, squares, or triangles. Find the area of each part. Then find the sum. 8 ft Area of triangle Total Area of semi-circle Area of rectangle 25.12 ft² + 64 ft² + 40 ft² 129.12 ft²

The foul poles down the 1st and 3rd base lines on a baseball field are 250 feet from home plate. Find the area of the field. Break the figures apart into simple shapes: circles, rectangles, squares, or triangles. Find the distance around each part. Area of quarter-circle

24 Homework Text p. 366, #7-15 all, 24, 29 Text p. 370, #9-17 all