How do i measure arcs or angles when i only have one given number

The area of a 25-inch tv screen is 300 square inches. the area of a 40-inch tv screen is 768 square inches. the are of the smaller screen is what percent of the area of the larger screen?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"