How Large Skills Area and perimeter of irregular shapes

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Presentation transcript:

How Large Skills Area and perimeter of irregular shapes Life in 3D How Large Skills Area and perimeter of irregular shapes

To find the area of an irregular object: 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 65 66 67 68 69 70 71 72 73 74 75 76 To find the area of an irregular object: Count the number of full squares Count the number of squares that are half or more Add these numbers together to get the total area of your hand, or any other irregular object So using this grid the hand has an area of 76 squares. Use cm² paper to find your areas

perimeter of an irregular object: To find the perimeter of an irregular object: Place a piece of string (or shoe lace if you have no string) around the perimeter of the object . Then measure the length of the string used with a ruler.