# Ex 10.3, 11 - Chapter 10 Class 6 Mensuration

Last updated at Nov. 15, 2018 by Teachoo

Last updated at Nov. 15, 2018 by Teachoo

Transcript

Ex 10.3, 11 (a) Split the following shapes into rectangles and find their areas. (The measures are given in centimeters) Our rectangles are: APEF, CDPB Rectangle APEF, Length = l = 2 cm Breadth = b = 12 cm Rectangle CDPB, Length = l = 8 cm Breadth = b = 2 cm Area = l × b = 2 × 12 = 24 sq. cm = 24 〖𝑐𝑚〗^2 Area = l × b = 8 × 2 = 16 sq. cm = 16 〖𝑐𝑚〗^2 Area of given shape = 24 + 16 = 40 sq. cm = 40 cm2 Ex 10.3, 11 (b) Split the following shapes into rectangles and find their areas. (The measures are given in centimeters) Our rectangles are: ABCL, KDEJ, IFGH Finding sides, CL In rectangle ABCL CL = AB CL = 7 cm (Opposite sides) KD KD = KL + CL + CD KD = 7 + 7 + 7 KD = 21 cm Rectangle ABCL, Length = l = 7 Breadth = b = 7 Area = l × b = 7 × 7 = 49 sq. unit Rectangle KDEJ, Length = l = 21 Breadth = b = 7 Area = l × b = 21 × 7 = 147 sq. unit Rectangle ABPJ, Length = l = 7 Breadth = b = 7 Area = l × b = 7 × 7 = 49 sq. unit Area of given shape = 49 + 147 + 49 = 245 cm2 Ex 10.3, 11 (c) Split the following shapes into rectangles and find their areas. (The measures are given in centimeters) Our rectangles are, ABCH, GDEF Rectangle ABCL, Length = l = 5 Breadth = b = 1 Rectangle GDEF, Length = l = 1 Breadth = b = 4 Area = l × b = 5 × 1 = 5 〖𝑐𝑚〗^2 Area = l × b = 1 × 4 = 5 〖𝑐𝑚〗^2 Area of given shape = 5 + 4 = 9 cm2

Area by splitting into rectangles

Chapter 10 Class 6 Mensuration

Concept wise

- Perimeter
- Perimeter of Rectangle
- Perimeter of Square
- Perimeter of Triangle
- Perimeter of Pentagon and Hexagon
- Area - Definition
- Finding area by counting squares
- Area of Square
- Area of Rectangle
- Area by splitting into rectangles
- Finding Area by Changing units
- Area questions with both rectangles and squares

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.