If you read this just answer it, ok is that so the formula below gives the area of a semi-circle, a, with a radius of r. solve the formula for the radius.

Start with

A = (1/2)*pi*r^2 and solve for r^2, and then for r:

A 2

--- * = r^2.

1 pi

Then r = + sqrt( 2A/pi).

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.

according to egenuity the answer is

step-by-step explanation:

d. 344.22