Question

Can someone pls help for brainlest

Answer 1

Answer:

Step-by-step explanation:

If the diameter of the semicircle is 6, then its radius is 3. The formula we use for this is the area of a circle divided in half, or:

$A=\frac{\pi r^2}{2}$ using 3.14 for pi, as instructed.

$A=\frac{(3.14)(3)^2}{2}$ and

$A=\frac{(3.14)(9)}{2}$ and

$A=\frac{28.26}{2}$ so

A = 14.13 square cm

Answer 2

We know that, Area of circle is given by : π × radius²

Semicircle is exactly half of a circle. So, Area of semicircle should be half of the area of a circle.

$\implies \sf{Area \ of \ a \ Semicircle = \dfrac{\pi \times (radius)^2}{2}}$

Given : Diameter of the semicircle is 6 cm

We know that, Radius is half of the Diameter

So, Radius of the Semicircle : 3 cm

$\implies \sf{Area \ of \ the \ given \ Semicircle = \dfrac{\pi \times (3)^2}{2}}$

$\implies \sf{Area \ of \ the \ given \ Semicircle = \dfrac{3.14 \times 9}{2}}$

$\implies \sf{Area \ of \ the \ given \ Semicircle = (3.14 \times 4.5)}$

$\implies \sf{Area \ of \ the \ given \ Semicircle = 14.13 \ square \ centimeters}$