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**Chapter 11 Worksheet 6 | Perimeter and Area | Class-7 DAV Secondary Mathematics**

## Unit 11 Worksheet 6 || **Perimeter and Area**

**1. Find the area of a circle of diameter 8.4 m. **

**Answer 1:**

**2. The circumference of a circle is 17.6 cm. Find the area of the circle. **

**Answer 2:**

**3. The area of a circular lawn is 154 m2, find its circumference. **

**Answer 3:**

**4. A circular plot is of radius 77 m. Find its value at 175 per square metre. **

**Answer 4:**

**5. The diameters of two silver discs are in the ratio 2 : 3. What will be the ratio of their areas? **

**Answer 5:**

**6. If the perimeter of a semi-circular park is 72 m, find its area and radius. **

**Answer 6:**

**7. If a wire of 440 m length is moulded in the form of a circle and a square turn-by-turn, find the ratio of the area of the circle to that of square. **

**Answer 7:**

**8. Find the area of the square that can be inscribed in a circle of radius 8 cm. **

**Answer 8:**

**9. The diameter of a circular park is 24 m. A 3 m wide path runs around it from inside. Find the cost of paving the path at 25 per square meter. **

**Answer 9:**

**10. A paper is in the form of a rectangle PQRS in which PQ = 10 cm and QR = 7 cm. Two semi-circular portions with QR and PS as diameters are cut off (As shown in P figure 11.22). Find the area of the remaining part.**

**Answer 10:**

**11. A horse is tied to a pole with 21 m long string. Find the area where the horse can graze. **

**Answer 11:**

**12. Two concentric circles have radii of 14 cm and 7 cm respectively. Find the area of space between them. **

**Answer 12:**

**13. The sum of circumferences of four small circles of equal radius is equal to the circumference of a bigger circle. Find the ratio of the area of the bigger circle to that of the smaller circle. **

**Answer 13:**

**14. The area of a circle is equal to the area of a rectangle with sides 112 m and 88 m respectively. Find the circumference of the circle.**

**Answer 14:**

- Chapter 1 Rational Numbers | Class-7 DAV Secondary Mathematics
- Chapter 2 Operations on Rational Numbers | Class-7 DAV Secondary Mathematics
- Chapter 3 Rational Numbers as Decimals | Class-7 DAV Secondary Mathematics
- Chapter 4 Exponents and Powers | Class-7 DAV Secondary Mathematics
- Chapter 5 Application of Percentage | Class-7 DAV Secondary Mathematics
- Chapter 6 Algebraic Expressions | Class-7 DAV Secondary Mathematics
- Chapter 7 Linear Equations in One Variable | Class-7 DAV Secondary Mathematics
- Chapter 8 Triangle and Its Properties | Class-7 DAV Secondary Mathematics
- Chapter 9 Congruent Triangles | Class-7 DAV Secondary Mathematics
- Chapter 10 Construction of Triangles | Class-7 DAV Secondary Mathematics
- Chapter 11 Perimeter and Area | Class-7 DAV Secondary Mathematics
- Chapter 12 Data Handling | Class-7 DAV Secondary Mathematics
- Chapter 13 Symmetry | Class-7 DAV Secondary Mathematics
- Chapter 14 Visualising Solids | Class-7 DAV Secondary Mathematics

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