Question

Examplo 23: The diameter of a circular park is 70 m, a path of' width 2 m runs on the outside around it. Find the aron of the path. 70 Solution: Radius () of the inner circle m = 35 m 2​

Answer 1

Answer:

Question :

• Diameter of a circular park is 70m. A path of width 2m runs outside around it. Find the area of path.

Solution :

Given,

Diameter of circular park = 70m

Width of path = 2m

To find:

• Area of path

Formulas used:

♦ Radius of outer circle = r + width of path

♦ Area of path = π ( R² - r² )

( That is R² is outer radius and r² is inner radius )

Step by step explaination:

First calculate the radius of inner circle

That is,

radius of inner circle = 70/2 m

= 35 m

Now we have to calculate the radius of outer circle

That is,

Radius of outer circle = r + width of path

= (35 + 2) m

= 37m

Now we have to calculate the area of path

That is,

Area of path = π ( R² - r² )

= 3.14 ( 37² - 35²)

= 3.14 × 144m²

= 452.16 m²

Area of path is 452.16 m²

Step-by-step explanation:

Answer 2

Answer:

Question :

• Diameter of a circular park is 70m. A path of width 2m runs outside around it. Find the area of path.

Solution :

Given,

Diameter of circular park = 70m

Width of path = 2m

To find:

• Area of path

Formulas used:

♦ Radius of outer circle = r + width of path

♦ Area of path = π ( R² - r² )

( That is R² is outer radius and r² is inner radius )

Step by step explaination:

First calculate the radius of inner circle

That is,

radius of inner circle = 70/2 m

= 35 m

Now we have to calculate the radius of outer circle

That is,

Radius of outer circle = r + width of path

= (35 + 2) m

= 37m

Now we have to calculate the area of path

That is,

Area of path = π ( R² - r² )

= 3.14 ( 37² - 35²)

= 3.14 × 144m²

= 452.16 m²

Area of path is 452.16 m²

Step-by-step explanation: