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LOGO Area and Perimeter of a Square By M.Veerasakdi.

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Presentation on theme: "LOGO Area and Perimeter of a Square By M.Veerasakdi."— Presentation transcript:

1

2 LOGO Area and Perimeter of a Square By M.Veerasakdi

3 What shape is this?

4 The area of a square with sides of length 1cm is 1cm². The area of a square with sides of length 1cm is 1 cm².

5 The area of other squares can be found by counting squares or by multiplying the length of the sides.

6 The perimeter of a square is the total length of the four sides.

7 Example Question Look at the 7cm × 7cm square below: a) What is the area of the square? b) What is the perimeter of the square?

8 LOGO Area of Square Area of Square Area of Square Area of Square Square Area = a 2 Square a = length of side Square Square Perimeter = 4 x a Square a = length of side

9 Word Problem : Page ) Perimeter = 2 x(Length + Width) = 2 x ( ) = 2 x ( ) = 210 m. Ans.* = 210 m. Ans.*

10 5) Area = Length x Width 96 = Length x 8 96 = Length x 8 96 ÷ 8 = Length 96 ÷ 8 = Length Length = 12 cm. Ans. Length = 12 cm. Ans.

11 6 ) Perimeter = 2 x (Length + Width) 48 = 2 x (16+Width ) 48 = 2 x (16+Width ) 48 = Width 48 = Width (48 – 32) ÷ 2 = Width (48 – 32) ÷ 2 = Width Width = 8 cm. Ans. Width = 8 cm. Ans.

12 Exercise 13.2 Page )Perimeter = 4 x Length = 4 x 6 = 4 x 6 = 24 cm. Ans. = 24 cm. Ans. Area = Length x Length Area = Length x Length = 6 x 6 = 6 x 6 = 36 sq.cm. Ans. = 36 sq.cm. Ans.

13 2 ) Perimeter = 4 x Length = 4 x 12 = 4 x 12 = - cm. Ans. = - cm. Ans. Area = Length x Length Area = Length x Length = 12 x 12 = 12 x 12 = - cm.sq. Ans. = - cm.sq. Ans.

14 3 *) Perimeter = 4 x Length = 4 x 20 = 4 x 20 = - cm. Ans. = - cm. Ans. Area = Length x Length Area = Length x Length = 20 x 20 = 20 x 20 = - cm.sq. Ans.* = - cm.sq. Ans.*

15 4 ) Perimeter = 4 x Length = 4 x 30 = 4 x 30 = - cm. Ans. = - cm. Ans. Area = Length x Length Area = Length x Length = 30 x30 = 30 x30 = - cm.sq. Ans. = - cm.sq. Ans.

16 NoLengthAreaPerimeter

17 NoLengthAreaPerimeter

18 Solve the following …. Page *1 ) Area = Length x Length = 5 x 5 = 5 x 5 = - cm. sq.Ans. = - cm. sq.Ans. 2 ) Area = Length x Length 64 = - x - 64 = - x - = 8 cm.Ans. = 8 cm.Ans.

19 3 ) Area = Length x Length 225 = 15 x = 15 x 15 Length = 15 cm.Ans. Length = 15 cm.Ans. Perimeter = 4 x Length = 4 x 15 = 4 x 15 = - cm.Ans. = - cm.Ans.

20 4) Area = Length x Length 64 = - x - 64 = - x - Length = - m. Length = - m. 5 ) Perimeter = 56 2 times = 56 x 2 2 times = 56 x 2 = - m. = - m.

21 6 ) Perimeter = 4 x Length 120 ÷ 4 = Length 120 ÷ 4 = Length - m. = Length Ans. - m. = Length Ans.

22 LOGO 6) Area = Length x Length = 30 x 30 = 30 x 30 = - m.sq. Ans. = - m.sq. Ans.

23 LOGO


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