Question

Can someone check and tell if my answer is right.....

Please ASAP
And if not can you just right an correct answer..

Answer 1

1)

You have to find the diameter, which is 2r


You can do it two ways

a) Find the radius first

r =
`\sqrt (A)/(\pi)` = √28,26/3,14 = √9 = 3 cm

d = 3*2 = 6 cm

b) Use the formula d =
`\sqrt (4A)/(\pi)` = √4*26,28/3,14 = √113,04/3,14 = √36 = 6 cm

2)

Use the formula r =
`\sqrt (A)/(\pi)`

So r = √12,56/3,14 = √4 = 2 cm