Question

Work out the area of this semicircle.Take pie to be 3.142 and give your answer to 2 decimal places 10cm

Answer 1

Answer:

The area of the semi circle  $A = 157.1 cm^2$

Step-by-step explanation:

Explanation:-

Given radius of circle 'r' = 10 cm

The area of the circle formula

                                $A = \pi (r)^{2}$

The area of the semi circle formula

                            $A = \frac{\pi (r)^{2} }{2}$

taking  π =3.142

                           $A = 3.142 X \frac{(10)^2}{2}$

On calculation , we get

                           $A = 157.1 cm^2$

Final answer:-

The area of the semi circle  $A = 157.1 cm^2$