The adjoining figure represents a rectangular lawn with a circular flower bed in the middle. Find:
(i) the area of the whole land
(ii) the area of the flower bed
(iii) the area of the lawn excluding the area of the flower bed
(iv) the circumference of the flower bed.

Solution:

(i) Area of the rectangular lawn = Length × Breadth

= 10 m × 5 m

= 50 m²

(ii) Area of the circular flower bed = πr ²

= (22/7) × 2 m × 2 m

= 12.57 m²

(iii) Area of the lawn excluding the area of the circular flower bed,

= Area of the lawn - Area of the circular flower bed

= 50 m² - 12.57 m²

= 37.43 m²

(iv) The circumference of the flower bed = 2πr

= 2 × 3.14 × 2 m

= 12.56 m

☛ Check: NCERT Solutions Class 7 Maths Chapter 11

Video Solution:

The adjoining figure represents a rectangular lawn with a circular flower bed in the middle. Find: (i) the area of the whole land. (ii) the area of the flower bed. (iii) the area of the lawn excluding the area of the flower bed. (iv) the circumference of the flower bed.

Maths NCERT Solutions Class 7 Chapter 11 Exercise 11.4 Question 9

Summary:

The given figure represents a rectangular lawn with a circular flower bed in the middle. Then: (i) the area of the whole land is 50 m² (ii) the area of the flower bed is 12.57 m² (iii) the area of the lawn excluding the area of the flower bed is 37.43 m² (iv) the circumference of the flower bed is 12.56 m.

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