2 Answers

Agus Puryanto · Answer 1 · 2021-10-06T13:39:50+0000

Formula for the area of a circle: A = pi * r^2

A semi-circle is half of a circle. So, we will need to divide the area of the total circle by 2 to find the area of a semi-circle.

r = d / 2

r = 6 / 2 = 3

A = pi * 9

A = 9pi

Semi-circle:

A = 9pi / 2

A = 4.5 pi cm^2 or 14.14 cm^2

Hope this helps!! :)

Biffen · Answer 2 · 2021-10-09T22:29:01+0000

Answer:

Area of the semicircle =
14.13cm^2

Explanation:

Area of a circle=
$\pi r^2$

Area of a semicircle=
$\pi r^2/2$

For:

Diameter=6 cm

Radius= 6/2=3 cm

As,
$\pi =(22)/(7)=3.14$

Area of the semicircle:

=
(3.14*3*3)/2

$=(3.14*9)/2\\\\=28.26/2\\\\=14.13cm^2$

Area of the semicircle =
14.13cm^2

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