Class 6 : Excersice 10.3

10. By splitting the following figures into rectangles, find their areas ( The measures are given in cms )

a.

Solution: 

First we have to broken the given figure into rectangles as shown above (in blue ).

now lets find each rectangles area

Area of 1st Rectangle :
length = 4cm , width = 2cm
Area = 4 * 2 = 8 cm square

Area of 2nd rectangle :
length = 6cm , width = 1cm
Area = 6 * 1 = 6 cm square

Area of 3rd rectangle :
length = 3cm , width = 2cm
Area = 3 * 2 = 6 cm square

Area of 4th rectangle :
length = 4cm , width = 2cm
Area = 4 * 2 = 8 cm square

Area of the given figure = area of 1st rectangle + area of 2nd rectangle
                                         + area of 3rd rectangle + area of 4th rectangle  
                                       = 8 + 6 + 6 + 8 cm square
                                       = 28 cm square