warm up’s. area of trapezoids trapezoids b1b1 b2b2 h trapezoids have 2 bases. they are the...
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Warm Up’s
Warm Up’s
Warm Up’s
Area of Trapezoids
Trapezoids
b1
b2
h
Trapezoids have 2 bases. They are the parallel sides.
The height is determined by forming a right angle from base 1 to base 2.
Finding the area of trapezoids
Area = ½ h (b1 + b2)
15 cm.
5 cm.
b1
b2
10 cm.
h
½ 5 ( 15 + 10)
½ 5 ( 25)
2.5 ( 25) = 62.5 cm2
Ready to try some?
Find the area
Area = ½ h (b1 + b2)
16 ft.
4 ft.
b1
b2
11 ft.
h
½ 4 ( 16 + 11)
½ 4 ( 27)
2 ( 27) = 54 ft.2
Find the area
Area = ½ h (b1 + b2)
28 ft.
8 ft.
20 ft.
½ 8 ( 28 + 20)
½ 8 ( 48)
4 ( 48) = 192 ft.2
Find the area
Area = ½ h (b1 + b2)
16 m.
5 m. 8m.
½ 16 ( 8 + 5)
½ 16 ( 13)
8 ( 13) = 104 m.2
Find the area
Area = ½ h (b1 + b2)
9 in.
4 in.
6in.
½ 6 ( 9 + 4)
½ 6 ( 13)
3 ( 13) = 39 in.2
Find the area
Area = ½ h (b1 + b2)
31 m.
24 m.
35m.
½ 24 ( 31 + 35)
½ 24 ( 66)
12 ( 66) = 792 m.2
Find the area
Area = ½ h (b1 + b2)
16 cm.
10 cm.
12 cm.
½ 10 ( 16 + 12)
½ 10 (28)
5 ( 28) = 140 cm.2
What is the Area?