Question

In a rectangular lawn of length 12 m and width 8 m, there

is a circular flower bed of radius 4 m 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.​

Answer 1

Answer:

12.56m

Step-by-step explanation:

Length of rectangular lawn =10 m

Width of rectangular lawn =5 m

and

radius of flower bed =2 m

Part (1):

The area of whole land = Area of rectangular lawn

=length×width

=10×5=50 m

2

The area of whole land =50 m

2

Part (2):

Area of flower bed = Area of circle

=πr

2

=3.14×2

2

×=12.56 m

2

Area of flower bed =12.56 m

2

Part (3):

The area of lawn excluding the area of the flower bed

= rectangular lawn − Area of circle

=50−12.56

=37.44 m

2

The area of lawn excluding the area of flower bed =37.44 m

2

Part (4):

Circumference of the flower bed = circumference of circle =2πr

=2×3.14×2=12.56 m

Circumference of the flower bed =12.56 m