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

Are you looking for DAV Maths Solutions for class 7 then you are in right place, we have discussed the solution of the Secondary Mathematics book which is followed in all DAV School. Solutions are given below with proper Explanation please bookmark our website for further update !! All the Best !!

Chapter 11 Worksheet 4 | Perimeter and Area | Class-7 DAV Secondary Mathematics

Unit 11 Worksheet 4 || Perimeter and Area

1. The area of a triangle Is 90 cm2. If Its base is 15 cm, find its altitude.

Answer 1:

2. Find the base of a triangle whose area is 0.48 dm2 and altitude is 8 cm.

Answer 2:

3. Find the area of a right triangle whose hypotenuse is 13 cm and one side is 5 cm.

Answer 3:

4. Find the area of an isosceles right triangle whose equal sides are 15 cm each.

Answer 4:

5. Find the area of an isosceles right triangle having the length of each equal side 5 cm.

Answer 5:

6. The base of a triangular field is three times its height. If the cost of cultivating the field at Rs. 36 per hectare is Rs. 486. find its base and height (1 hectare = 10000 m2).

Answer 6:

7. In the figure 11.14, ST = 5 cm, OR = 9 cm. The area of the larger triangle is 50 cm2. What is the area of shaded region?

Answer 7:

8. The area of a rhombus is 98 m2. If one of its diagonal is 14 m, find the other diagonal.

Answer 8:

9. The diagonals of a rhombus are 8 cm and 6 cm respectively. Find its area.

Answer 9:

10. Find the area of a rhombus whose side is 13 cm and altitude is 2 cm.

Answer 10:

11. The area of a rhombus is 220.5 cm2. If Its altitude Is 17.5 cm, find the length of each side of rhombus.

Answer 11:

12. A diagonal of a quadrilateral is 40 m long and the perpendiculars to it from the opposite corners are 8 m and 10 m respectively. Find Its area. (Fig. 11.15)

Answer 12:

13. Find the area of a rhombus whose diagonals are 15.2 cm and 24 cm respectively. (Fig. 11.16).

Answer 13:

• 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