Find the radius, then double the radius measurement to find the diameter.
STEP 1:
find the radius
A= πr^2
plug in known numbers
68= (3.14)r^2
divide both sides by 3.14
21.6560509554= r^2
take the square root of both sides
4.6536062312 cm= r
STEP 2:
diameter equals two times the radius
D= 2 * 4.6536062312
D= 9.3072124625 cm (9.3 cm rounded to nearest tenth)
ANSWER: The diameter is 9.3072124625 cm (9.3 cm rounded to the nearest tenth)
Hope this helps! :)