Question

Diameter of the circular garden is

42m. There is a 3.5m wide road

around the garden. Find the area

of the road.​

Answer 1

Answer:

500.5m²

Step-by-step explanation:

Diameter of garden=42m

Radius of garden=21m

Radius of garden+road=24.5

Area of road = (Area of garden+road)-(Area of garden)

                     = [π(24.5m)²] - [π(21m)²]

                     = ($\frac{22}{7}$ × 600.25 ) - ($\frac{22}{7}$ × 441)  m²

                     = $\frac{22}{7}$ × (600.25 - 441)m²

                     = $\frac{22}{7}$ × 159.25 m²

                     =500.5m²