Question

38. The given figure represents a rectangular lawn of length 12 m and breadth 6 m with a circular flower bed of radius 2 m. Find: i. The area of the flower bed ii. The circumference of the flower bed iii. The area of the lawn iv. The area of the lawn excluding the flower bed​

Answer 1

Step-by-step explanation:

(i) Length of the lawn= 10m

Breadth of the lawn= 5m

Area of the lawn=$l\times bl×b$

$=10m\times5m=50m^2=10m×5m=50m$

(ii) Area of the circular flower bed=$\pi r^2πr </p><p>2$

$\frac{22}{7}\times2\times2=\frac{88}{7}m^2=12.57m^2$

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

$=50m^2-\frac{88}{7}m^2$

$=\frac{350-88}{7}m^2=\frac{262}{7}m^2=37.43m^2$

(iv) Circumference of the flower bed= $2\pi r2πr$

$=2\times\frac{22}{7}\times2=\frac{88}{7}m^2=37.43m$