Question

what is the area of the semi circle and what is the area of the shaded region in the figure​

Answer 1

Answer:

Area of semicircle = 77cm²

Are of shaded region = 175cm²

Step-by-step explanation:

Area of the semicircle = πr²/2  (Since semi-circle is half of a circle)

                                     = $\frac{22}{7}$ x $49$/2

                                     = 154/2

                                     = 77cm²

Area of rectangle = l x b

                              = 18 x 14

                              = 252cm²

Area of shaded region = Area of rectangle - Area of semicircle

                                      = 252 - 77

                                      = 175cm²

Therefore, the area of the semicircle is 77cm² and area of the shaded region is 175cm².

Hope this helps...

Answer 2

Answer:

AREA OF SEMICIRCLE=77cm^2  &  AREA OF SHADED REGION=175cm^2

Step-by-step explanation:

AREA OF CIRCLE =Pi*r^2

AREA OF SEMI CIRCLE = 1/2[Pi*r^2]

DIAMETER IS GIVEN AS 14cm

RADIUS =DIAMETER/2 =14/2=7cm

PUTTING THE VALUES IN THE FORMULA:

1/2[Pi*7*7]

=77cm^2

AREA OF RECTANGLE =LENGTH*BREADTH

LENGTH=18cm

BREADTH=14cm

PUTTING THE VALUES IN THE FORMULA:

18*14=252cm^2

AREA OF SHADED REGION= AREA OF RECTANGLE-AREA OF SEMICIRCLE

=252-77

=175cm^2