Do Now. 3/31/2015 9-1 D Area of Trapezoids Key Concept.

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Presentation transcript:

Do Now

3/31/ D Area of Trapezoids

Key Concept

Example 1 Find the area of the trapezoid. A = 1212 h(b 1 + b 2 ) The area is 53 yd 2. A = 1212 · 4(26 ) A = · 4( ) 1 2

Example 2 Find the area of the trapezoid. The bases are 4 meters and 7.6 meters. The height is 3 meters. The area of the trapezoid is 17.4 square meters.

Example 2 The shape of the state of Montana resembles a trapezoid. Find the approximate area of Montana. Replace h with 285, b 1 with 542, and b 2 with 479.

The approximate area of Montana is about 145,493 square miles.

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Homework Pg. 537 #1-24 Evens