draw a line AB, take a point C outside it through C, draw a line parallel to AB using ruler and compass only​

Can somebody me out with this question

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

What is the volume of a cone with a height of 6 cm in the radius of 2 cm