Example 1
5 cm
A= lw
A = (12)(5)
A = 60 cm2
12 cm
Example 3
Find the area of the parallelogram below
n
8i
7 in
Find the area of the rectangle below
11.2 in
A= bh
A = (11.2)(7)
A = 78.4 in2
Example 4
Find the area of the parallelogram below
Example 2
3 ft
7 yd
Find the area of the rectangle below
9 ft
A= lw
A = (9)(3)
A = 27 ft2
9 yd
A= bh
A = (9)(7)
A = 63 yd2
Example 5
Example 7
Example 9
Find the area of the triangle below
Find the area of the trapezoid below
Find the area of the shape below
12 mm
Area of Rect.
A= lw
A= 6(8)
A= 48
4 ft
A= 1/2h(b1+b2)
A= 1/2 (4) (12 + 2.3)
A = 1/2 (4)(14.3)
A = (2)(14.3)
A = 28.6 mm2
4 mm
A= 1/2 bh
A = 1/2 (9)(16)
A = (9)(8)
A = 72 in2
8ft
6 ft
16 in
2.3 mm
13 ft
9 in
Total area of shape
48 ft2 + 42 ft2
90 ft2
Area of Trap.
A= 1/2h(b1+b2)
A= 1/2 (4) (13 + 8)
A = 1/2 (4)(21)
A = (2)(21)
A = 42 ft2
Example 10
Find the area of the shape below
Find the area of the triangle below
Example 8
Find the area of the trapezoid below
3.4 yd
Example 6
2.5 mi
8 ft
7 yd
10.5 ft
2 mi
A= 1/2 bh
A = 1/2 (10.5)(8)
A = 1/2(84)
A = 42 ft2
4 mi
A= 1/2h(b1+b2)
A= 1/2 (2) (4 + 2.5)
A = 1/2 (2)(6.5)
A = (1)(6.5)
A = 6.5 mi2
15 yd
Area of Tri.
A= 1/2 bh
A = 1/2 (15)(3.4)
A = 1/2(51)
A = 25.5 yd2
A= lw
A = (15)(7)
A = 105 yd2
Total Area of Shape
25.5 + 105 = 130.5 yd2