The diagonal of an isosceles trapezoid is mutually perpendicular. Find the area of the trapezoid if the projection of the diagonal to the larger base is 6 cm.
The growth of cities was caused by the development of trade and the emergence of new trade routes, for example, “from the Varangians to the Greeks” (through the
Until 1853, Japan lived in isolation and had little contact with the outside world. In 1854, they signed the Kanagawa Treaty with the United States, which marked the
Calculate the mass and volume of carbon dioxide that must be passed through the sodium hydroxide solution to obtain sodium bicarbonate weighing 21 g. 1. Let’s compose the