Question

irrelevant answers will be reported​

Answer 1

Step-by-step explanation:

1. Radius of circle=17.5 cm

Area of circle =Π× (17.5)^2 cm^2

=962.5 cm^2.

Circumference of circle=2×Π×17.5 cm

=110 cm.

2.Radius of semi-circle=25 cm

Perimeter of semi-circle=2×Π×25/2 cm

=157/2 cm [Π=3.14].

=78.6 cm

Area of semi-circle= Π×(25)^2/2 cm^2

=981.25 cm^2

Answer 2

Step-by-step explanation:

! ANSWER!

1

circumference = 2 ^r

so

2× 22/7×17.5

= 11o answer

2

given

the radius of semi circle icia = 25 cm

the perimeter = c and are = a of semi circle = ?

sollution

we know that the perimeter of semi circle = c

= the semicirular arc + the diamet

er = ^r + 2r

= c = ( ^+2)= 25 (3.14+2)=128.5 cm

again area × semi circle = a= 21^r*2

when r= radius of the circle

= a = 21×7×22×25^2cm^2

= 981.25 cm2

I hope this is right answer otherwise I am sorry