Question

Can i get a little help ?







(4)

Answer 1

Area of the side walk = 151
`m^(2)`

Explanation:

Given: Diameter of circular flower bed = 22 m

Width of circular side walk = 2 m

`\pi` = 3.14

Area of the side walk = area of flower bed with side walk - Area of flower bed

Area of a circle =
`\pi`
`r^(2)`

where r is the radius of the circle.

i. For the circular flower bed, diameter = 22 m. So that,

radius =
`(diameter)/(2)`

=
`(22)/(2)` = 11 m

Area of circular flower bed =
`\pi`
`r^(2)`

= 3.14 x 11 x 11

= 379.94

Area of the circular flower bed = 380
`m^(2)`

ii. For the flower bed with side walk, diameter = 26 m. So that,

radius =
`(diameter)/(2)`

=
`(26)/(2)` = 13 m

Area of flower bed with side walk =
`\pi`
`r^(2)`

= 3.14 x 13 x 13

= 530.66

Area of flower bed with side walk = 531
`m^(2)`

Area of the side walk = 531 - 380

= 151
`m^(2)`