Help please it’s due in 27 mins

Can't gugys answer the ratio question. this is urgent the plans of a building is drawn toward scale of 1: 1000. kfc the foyer on the plans measures 62mm by 54mm, how large is the foyer in real life?

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?