Area of square field = 60025 m2Speed of cyclist = 18 km/h= 18 × = 5 m/s2Area = 60025 m2Side2 = 60025Side = = 245Therefore,Total length of boundary = 4 × Side= 4 × 245= 980 mHence,Time taken = = 196 seconds= 3 minutes and 16 seconds

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RD Sharma - Mathematics

3. Squares and Square Roots

1. Rational Numbers
2. Powers
3. Squares and Square Roots
4. Cubes and Cube Roots
5. Playing with Numbers
6. Algebraic Expressions and Identities
7. Factorization
8. Division of Algebraic Expressions
9. Linear Equation in One Variable
10. Direct and Inverse Variable
11. Time and Work
12. Percentage
13. Profit, Loss, Discount and Value Added Tax (VAT)
Compound Interest
15. Understanding Shapes-I (Polygons)
16. Understanding Shapes-II (Quadrilaterals)
17. Understanding Shapes-III (Special Types of Quadrilaterales)
18. Practical Geometry (Constructions)
19. Visualising Shapes
20. Mensuration-I (Area of a Trapezium and a Polygon)
21. Mensuration-II (Volumes and Surface Areas of a Cuboid and a Cube)
22. Mensuration-III (Surface Area and Volume of a Right Circular Cylinder
23. Data Handling-I (Classification Representation of Data as Histograms)
24. Data Handling-II (Graphical Representation of Data as Pie Charts
25. Data Handling-III (Pictorial Representation of Data as Pie Charts
26. Data Handling-IV (Probability)
27. Introduction to Graphs

Exercise 3.1

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Exercise 3.2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Exercise 3.3

1 2 3 4 5 6 7

Exercise 3.4

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Exercise 3.5

1 2 3 4 5 6 7 8 9 10 11 12

Exercise 3.6

1 2 3 4 5

Exercise 3.7

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Exercise 3.8

1 2 3 4 5

Exercise 3.9

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Q. 94.2( 5 Votes )

The area of a squ

Class 8th RD Sharma - Mathematics 3. Squares and Square Roots

Answer :

Area of square field = 60025 m²

Speed of cyclist = 18 km/h

= 18 ×

= 5 m/s²

Area = 60025 m²

Side² = 60025

Side =

= 245

Therefore,

Total length of boundary = 4 × Side

= 4 × 245

= 980 m

Hence,

Time taken =

= 196 seconds

= 3 minutes and 16 seconds

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