SWBAT: Calculate the area and perimeter of irregular figures ...

Area and Perimeter of Irregular Figures November 14, 2011

SWBAT: Calculate the area and perimeter of irregular figures


HW Answers


HW Answers


HW Answers


HW Answers


HW Answers



Perimeter of Rect = 12 + 8 + 8 = 28 12 + 2(8) Perimeter of triangle = 15 + 9 = 24

Total Perimeter = 28 + 24 = 52 ft


Perimeter of Square = 3(4) + 2 = 14 Perimeter of rectangle = 2 + 2(6) = 14 Total Perimeter = 14 + 14 = 28 m


Perimeter of Rect = 6 + 2(9) = 24 Perimeter of semicircle = Total Perimeter = 24 + 3

=3



Perimeter of Square = 3(6) = 18 Perimeter of semicircle = Total Perimeter = 18 + 3

=3


Perimeter of Rect = 2(13) = 26

Perimeter of semicircle = Perimeter of triangle = 6 + 15 = 21 Total Perimeter =

47 + 9

= 9



Perimeter of Rect = 2(15) = 30 Perimeter of 2 semicircles = d = 10 (2 semicircles = whole circle)

Total Perimeter =

30 + 10


Perimeter of Rectangle = 6 + 2(9) = 24 Perimeter of semicircle = Total Perimeter = 24 + 3 Total Perimeter  33.4 ft

=3



12

Area of Rect = L  W = 12  8 = 96 Area of triangle =

Total Area = 96 + 54 = 150 ft2

= 54


Area of triangle =

= 264

Area of semicircle =

= 60.5

Total Area = 264 + 60.5

Total Area  454 ft2

ft2



Area of rectangle = L  W = 9  6 = 54 Area of semicircle = Total Area = 54 + 4.5 Total Area  68 ft2

= 4.5 ft2


Area of Rect1 = L  W = 5  3 = 15 Area of Rect2 = L  W = 5  3 = 15

Area of quarter circle =

= 2.25 Total Area = 15 + 15 + 2.25 Total Area  37 cm2

cm2


