Find what is x for that angle?

Anyone know? will mark brainliest if you're correct!

If 20% of a number is 35, what is 50% of that number?

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