A circle has a circumference of 54π cm what is the radius?

For each expression use a property to write an equivalent expression.

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top