Question

Work out the area of this semicircle with radius 3cm give your anwser in terms of pi

Answer 1

Step-by-step explanation:

semicircle =1/2 of full circle

that means

area of semicircle =1/2πr^2. (r=radius)

. =1/2π3^2

=1/2π*3*3

=4.5π. (2/9)

Answer 2

Answer:

The area of semicircle is $4.5\pi cm^{2}$

Step-by-step explanation:

The formula of area of semicircle is $=\frac{\pi r^{2} }{2}$

So, the radius of the semicircle is 3 cm

The area is= $\frac{\pi 3^{2} }{2}$

                  =$\frac{9\pi }{2}$

                  $=4.5\pi cm^{2}$.

So, the area of the semicircle is $4.5\pi cm^{2}$.