CK-12 Geometry-Concepts

http://www.ck12.org Chapter 10. Perimeter and Area

1. Find the height of the triangle.


2. Find the perimeter.


3. Find the area.

Answers:

1. Use the Pythagorean Theorem to find the height.

82 +h^2 = 172

h^2 = 225

h= 15 in

2. We need to find the hypotenuse. Use the Pythagorean Theorem again.

( 8 + 24 )^2 + 152 =h^2

h^2 = 1249

h≈ 35. 3 in

The perimeter is 24+ 35. 3 + 17 ≈ 76. 3 in.

3. The area is^12 ( 24 )( 15 ) = 180 in^2.

Interactive Practice

MEDIA

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