Find chris’s mistake.

a. step 1
b. step 2
c. step 3
d. chris did not make a mistake

What is the radius of the cone in the diagram? round your answer to the nearest whole number

Solve for p: 21 , = 3/4 pit's fraction problem

The perimeter of △cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.