Area and Perimeter of a Square

Area and Perimeter of a Square By M.Veerasakdi

What shape is this?

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.

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

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

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?

SquareArea = a2 a = length of side SquarePerimeter = 4 x a a = length of side Area of Square

Word Problem : Page 210. 4) Perimeter = 2 x(Length + Width) = 2 x ( 60 + 45 ) = 210 m. Ans.*

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

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

Exercise 13.2 Page 212 - 213 • Perimeter = 4 x Length = 4 x 6 = 24 cm. Ans. Area = Length x Length = 6 x 6 = 36 sq.cm. Ans.

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

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

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

Solve the following …. Page 214-215 *1 ) Area = Length x Length = 5 x 5 = - cm. sq.Ans. 2 ) Area = Length x Length 64 = - x - = 8 cm.Ans.

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

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

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

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

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Area and Perimeter of a Square