Question

Please, can you give me help with answer #1- #2 and #3.Thanks.

Answer 1

1. radius r = 20 cm

area = pi*r^2 = 3,14*400 = 1256 cm^2

circumference = 2pir = 2*3,14*20 = 136 cm

2. radius = 8 cm 

area = 3,14*8^2 = 3,14*64 = 200,96 cm^2

circumference = 2*3,14*8 = 50,24 cm

3. radius = 1 cm 

area = 3,14*1^2 = 3,14*1 = 3,14 cm^2

circumference = 2pir = 2*3,14*1 = 6,28 cm

hope these will help you 

Answer 2

Look at pic for work, all answers and work is listed