Question

Please look at the image

Answer 1

the answer is 18.84

6 * 3.14 = 18.84

Answer 2

Explanation:

diameter = 6 units

Radius = r = 6/2 = 3 units

Area of semicircle =
`(1)/(2)\pi r^(2)`

`=(1)/(2)\pi *3*3\\\\\\=(9)/(2)\pi \\\\\\= 4.5 \pi \ unit^(2)`