Find an equation of the plane through the line of intersection of the plane and perpendicular to another plane

You are updating your garage and the only thing left to paint is your garage day. you're only going to paint the slide that faces the street. the garage door is 9 fert 8inches tall and 120 inches wide. you need to know the surface area of the side of the garage door to determine how much paint to buy. the hardware store sells paint by how much covers a square foot. what is the surface area you should report to the hardware store what is the answer

Solve the triangle. a = 21°, c = 105°, c = 5

Apack of gum would be considered a(n) necessity luxury item small ticket item unaccountable expense