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11.2 - Areas of Trapezoids, Rhombuses, and Kites. Trapezoid:. Why?. b 2. b 1. Rhombus:. Kite:. Find the area of the figure. 6. Find the area of the figure. Find the area of the figure. Find the area of the figure. 4. Find the area of the figure. 3. 8. A = 48 u 2. - PowerPoint PPT Presentation
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11.2 - Areas of Trapezoids, Rhombuses, and Kites
Trapezoid:
1 2
1
2A h b b
Why?
b2
b1
1 2
1
2A h b b
Rhombus:
1 2
1
2A d d
Kite:
1 2
1
2A d d
Find the area of the figure.
1 2
1
2A h b b
1(4) 3 72
A
2 10A
220A u
6
Find the area of the figure.1 2
1
2A d d
1(11)(7)2
A
1(77)2
A
238.5A u
Find the area of the figure.1 2
1
2A d d
1(16)(12)2
A
(8)(12)A
296A u
Find the area of the figure.1 2
1
2A d d
1(8)(14)2
A
(4)(14)A
256A u
4
Find the area of the figure.1 2
1
2A d d
1(6)(16)2
A
(3)(16)A
83
A = 48u2
Use the given information to find the value of x.
1 2
1
2A d d
1300 (2 )(30)
2x15
x
300 (30)x
10m = x
Use the given information to find the value of x.
1 2
1
2A h b b
139 (6) 9
2x
39 3 9x
39 3 27x 12 3x4cm x
Find the area of the figure.
1 2
1
2A d d
c2 = a2 + b2
252 = a2 + 242
625 = a2 + 576
49 = a2
7 = a
7
7 1(14)(39)2
A
7(39)A
2273A u
Find the area of the figure.
c2 = a2 + b2
102 = a2 + 62
100 = a2 + 36
64 = a2
8 = a
8
1 2
1
2A h b b
1(8) 6 242
A
4 30A2120A u
Find the area of the figure.
1 2
1
2A h b b
14 23
SOH – CAH – TOA
tan 4223
x
1x = 20.71
20.71 1(20.71) 14 372
A
10.35 51A
2528.09A u
O H
A
11.2 733-735 3-13 odd, 16-18, 24, 25, 27
HW Problems
#27
A =
10
5 +10
72
A = bh + 1 2
1
2h b b
A = (10)(5) + 12 7 10
2
A = 50 + 17
A = 67u2