в трапеции ABCD (AD И BC ОСНОВАНИЯ) диагонали пересекаются в точке О, AD= 12 см, ВС=4 см. найдите площадь треугольника ВОС, если площадь треугольника AOD равна 45 см кв.

Во сколько раз давление на такой глубине превышает норамальное атмосферное давление

Complete the text with the words from the box. contasts, prizes,present , winners, surprise, blow up, prepare, surprise, vote, every, guests, invitations Children of our class like to have parties. We write ... for our… Our party always has a theme: a balloon party, a teddy-bear party or any other. Re ... many interesting things for the party: we ... balloons, make ... . There are many games and . We . . . for the leader of the party. He or she gives ... to ... . Usually ...child gets a small.