Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN: 9780547587776

Author: HOLT MCDOUGAL

Publisher: HOLT MCDOUGAL

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Question

Chapter 10.3, Problem 31E

To determine

To calculate the area.

Expert Solution & Answer

Answer to Problem 31E

156 cm²

Explanation of Solution

Given Information: Length = 16 cm, Breadth = 8 cm, Trapezoid Bases B1 = 5 cm & B2 = 16 − 7 = 9 cm and height is of 12 **minus; 8 = 4 cm.

Formula Used:Area of Trapezoid = 12×Sum of parallel bases×Height & Area of rectangle = Length×Breadth

Calculation:

In given figure, it shows 1 Trapezoid and 1 rectangle.

So, Total Area = Area of Trapezoid + Area of rectangle

So, first calculate area of rectangle = Length×Breadth

Length = 16 cm. and Breadth = 8 cm.

Area of rectangle = 16×8 cm²

Area of rectangle = 128 cm²

Now, calculate area of Trapezoid.

Area of Trapezoid= 12×Sum of parallel bases×Height

So, parallel bases B1 = 5 cm & B2 = 16 − 7 = 9 cm and height is of 12 **minus; 8 = 4 cm.

Area of Trapezoid = 12×(5+9)×4 cm²

Area of Trapezoid = 12×14×4 cm²

Area of Trapezoid =28 cm²

Total Area = Area of Trapezoid + Area of rectangle

Total Area = 28 cm²+ 128 cm²

Total Area = 156 cm²

Chapter 10.3, Problem 30E

Chapter 10.3, Problem 32E

Chapter 10 Solutions

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

Ch. 10.1 - Prob. 1C Ch. 10.1 - Prob. 2C Ch. 10.1 - Prob. 3C Ch. 10.1 - Prob. 1E Ch. 10.1 - Prob. 2E Ch. 10.1 - Prob. 3E Ch. 10.1 - Prob. 4E Ch. 10.1 - Prob. 5E Ch. 10.1 - Prob. 6E Ch. 10.1 - Prob. 7E

Ch. 10.1 - Prob. 8E Ch. 10.1 - Prob. 9E Ch. 10.1 - Prob. 10E Ch. 10.1 - Prob. 11E Ch. 10.1 - Prob. 12E Ch. 10.1 - Prob. 13E Ch. 10.1 - Prob. 14E Ch. 10.1 - Prob. 15E Ch. 10.1 - Prob. 16E Ch. 10.1 - Prob. 17E Ch. 10.1 - Prob. 18E Ch. 10.1 - Prob. 19E Ch. 10.1 - Prob. 20E Ch. 10.1 - Prob. 21E Ch. 10.1 - Prob. 22E Ch. 10.1 - Prob. 23E Ch. 10.1 - Prob. 24E Ch. 10.1 - Prob. 25E Ch. 10.1 - Prob. 26E Ch. 10.1 - Prob. 27E Ch. 10.1 - Prob. 28E Ch. 10.1 - Prob. 29E Ch. 10.1 - Prob. 30E Ch. 10.1 - Prob. 31E Ch. 10.1 - Prob. 32E Ch. 10.2 - Prob. 1C Ch. 10.2 - Prob. 2C Ch. 10.2 - Prob. 3C Ch. 10.2 - Prob. 1E Ch. 10.2 - Prob. 2E Ch. 10.2 - Prob. 3E Ch. 10.2 - Prob. 4E Ch. 10.2 - Prob. 5E Ch. 10.2 - Prob. 6E Ch. 10.2 - Prob. 7E Ch. 10.2 - Prob. 8E Ch. 10.2 - Prob. 9E Ch. 10.2 - Prob. 10E Ch. 10.2 - Prob. 11E Ch. 10.2 - Prob. 12E Ch. 10.2 - Prob. 13E Ch. 10.2 - Prob. 14E Ch. 10.2 - Prob. 15E Ch. 10.2 - Prob. 16E Ch. 10.2 - Prob. 17E Ch. 10.2 - Prob. 18E Ch. 10.2 - Prob. 19E Ch. 10.2 - Prob. 20E Ch. 10.2 - 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