Question

Calculate the area of a circle with diameter of 1.8m please help!

Answer 1

circle area formula =

`\pi {r}^(2)`
half of the diameter is radius(r) so 1.8÷2 = 0.9m


`\pi * {0.9}^(2) =`

`{2.54m}^(2)`

Answer 2

Area of a circle =pi (3.14)r^2
Radius = 1/2 diameter
radius = 1/2 1.8
r = 0.9

Area = 3.14 x (0.9^2)
Area = 3.14 x 0.81
Area = 2.5434 (and you can round off to nearest tenth or hundredth)