Question

the number of squares that are required to fill a rectangle of 256cm by 216cm if each square is of 8cm , is

Answer 1

Answer:

We know: Perimeter of a rectangle = 2×(Length+Breadth)

(i) Length = 16.8 cm

    Breadth = 6.2 cm

    Perimeter = 2×(Length+Breadth)

                   = 2×(16.8+6.2) =46 cm

(ii) Length = 2 m 25 cm

                  =(200+25) cm       (1 m = 100 cm )

                  = 225 cm  

    Breadth =1 m 50 cm

                  = (100+50) cm      (1 m = 100 cm )

                  = 150 cm    

    Perimeter = 2×(Length+Breadth)

                     = 2×(225+150) =750 cm

(iii) Length = 8 m 5 dm

                   = (80+5) dm   (1 m = 10 dm )

                   = 85 dm     

       Breadth = 6 m 8 dm

                     = (60+8) dm   (1 m = 10 dm )

                     = 68 dm  

    Perimeter = 2×(Length+Breadth)

                   = 2×(85+68) =306 dm