Find the lateral area of the right prism with height 0.3 dm, if the base of the prism is:

Isosceles trapezoid with bases of 3 cm and 5 cm, and legs of 4 cm;

What is the result of the following division?

Having a hard time understanding this question (see attachment).

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?