The area of a circle is 36cm^2 (2 is the exponent) (a) find the radius of the circle

(b) find the circumference of a circle

a) 3.39 cm b) 21.29 cm

Step-by-step explanation:

ok so the area of a circle is r^2.

if the area is 36 cm^2 we can divide it by 3.14, which is pi (). that gives us 11.46. now we find the approximate square root of this.

this is approximately equal to 3.39. the radius is about 3.39cm.

now that we know the radius, we can easily find the circumference. the formula for this is d. the diameter is just the radius times 2. (3.39)(2)

we plug the numbers into the formula: 3.14(6.78)=21.29 cm =d

dont't really have enough info here but its likely

sss for the three sides being congruent ( its stands for side side side)

or

sas   for side angle side.   so a side is congruent and and angle and a side