When Martin weighted his dog in April it weighed 384 then he weighed his dog again in August and it weighed 432. How much did his dog gained between April and August

Can someone me and plz do the problem

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.