6th grade math, help me pleasee:)

If chord ab is congruent to chord cd, then what must be true about ef and eg?

Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar