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**Warm Ups Preview 10-1 Perimeter 10-2 Circles and Circumference**

Area of Parallelograms Area of Triangles and Trapezoids Area of Circles Area of Irregular and Composite Figures Three-Dimensional Figures Volume of Prisms Volume of Cylinders 10-10 Surface Area

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**1. What figure has four equal sides and four right angles? **

10-1 Perimeter Warm Up 1. What figure has four equal sides and four right angles? 2. What figure has eight sides? 3. What figure has five sides? square octagon pentagon

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**The perimeter is multiplied by 5.**

10-2 Circles and Circumference Warm Up The length and width of a rectangle are each multiplied by 5. Find how the perimeter of the rectangle changes. The perimeter is multiplied by 5.

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**10-3 Area of Parallelograms**

Warm Up Find each product. 1. 8 12 2. 3 6.3 7 96 18 2 3 56 3 or 1 2 1 3 5 59.22 24.5

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**Warm Up Evaluate. 1. · 6 · 8 24 2. · 5.4 · 7.2 19.44 3. 4(7 + 10) 68**

10-4 Area of Triangles and Trapezoids Warm Up Evaluate. 1 2 1. · 6 · 8 24 2. 1 2 · 5.4 · 7.2 19.44 3. 4(7 + 10) 68 ( ) 70.7

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10-5 Area of Circles Warm Up Simplify. 1. 82 2. 122 64 144 38.44 56.25

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**Find the area of the following figures. **

10-6 Area of Irregular and Composite Figures Warm Up Find the area of the following figures. 1. a triangle with a base of 12.4 m and a height of 5 m 2. a parallelogram with a base of 36 in. and a height of 15 in. 3. a square with side lengths of 2.5 yd 31 m2 540 in2 6.25 yd2

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**Solve. Use 3.14 as an estimate for .**

10-7 Three-Dimensional Figures Warm Up Solve. Use 3.14 as an estimate for . 1. The diameter of a circle is 12 in. What is the circumference? 37.68 in. 2. The radius of a circle is 9 cm. What is its circumference? cm 3. Find the area of a circle with a 12 ft radius. ft2

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**Find the area of each figure. Use 3.14 as an estimate for .**

10-8 Volume of Prisms Warm Up Find the area of each figure. Use 3.14 as an estimate for . 1. rectangle with base length 8 in. and height 12 in. 96 in2 2. circle with diameter 8 ft 50.24 ft2

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**Warm Up 10-9 Volume of Cylinders**

Find the volume of each figure described. 1. rectangular prism with length 12 cm, width 11 cm, and height 10 cm 1,320 cm3 2. triangular prism with height 11 cm and triangular base with base length 10.2 cm and height 6.4 cm cm3

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**Identify the figure described. **

10-10 Surface Area Warm Up Identify the figure described. 1. two parallel congruent faces, with the other faces being parallelograms 2. a polyhedron that has a vertex and a face at opposite ends, with the other faces being triangles prism pyramid

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