Question

flower bed is surrounded by a path 4 m wide. The diameter of flower bed is 66 m. What is the area of this path? Take pie = 3.14​

Answer 1

Solution:

Diameter of the flower bed = 66 m .

∴ Radius = 662 = 33 m

Let r1 = 33 m

Width of the path = 4 m

Radius of the flower bed included path

= 33 m + 4 m = 37m

Let r2 = 37m

Area of the circular path = π(r22−r21)

= 3.14 (372– 332)

= 3.14 × (37 + 33) (37 – 33) [Y a2 – b2 = (a + b)(a-b)]

= 3.14 × 70 × 4 = 879.20 m2

Hence, the required area = 879.20 m2