Question

The roundabout at the park has a diameter of 2 meters

A) what is the circumference of the roundabout?


B) what is the area of the roundabout

Answer 1

A) 2π

B) 1π

Explanation:

circumference of circle= d×π

circumference=2×π=2π or 6.28 rounded to 2dp

area of circle= r^2×π

radius=2÷2=1

radius=1^2×π

radius=1π or 3.14 rounded to 2dp

Answer 2

A) The circumference of a circle can be found by multiplying its diameter by pi (π). Therefore, the circumference of the roundabout is:

Circumference = 2 x π x radius

Radius = diameter/2 = 2/2 = 1 meter

Circumference = 2 x π x 1 = 2π meters

B) The area of a circle can be found by multiplying its radius squared by pi (π). Therefore, the area of the roundabout is:

Area = π x radius^2

Area = π x 1^2 = π square meters or approximately 3.14 square meters.