Question

A semicircular flower bed has a diameter of 3 metres.

What is the area of the flower bed?
m2

Answer 1

A semicircular flower bed has a diameter of 3 meters.

Diameter = 3 meters

Radius =
`(diameter)/(2)=(3)/(2)`

Area of circle =
`\pi r^2`

Area of semi circle =
`(1)/(2)\pir^2`

where r is the radius of the circle

Area of semi circle =
`(1)/(2) * \pi *(3)/(2)^2`

We use 3.14 for pi

Area of semi circle =
`(1)/(2) * 3.14 *(3)/(2)^2` = 3.5325

Area of semi circle = 3.53
`m^2`