Only those two questions for 20 points

I'm so close to finishing all these.

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

To make a monster appear large in a movie, a human actor wore a costume and walked through a scale model of a city. the scale used was 1 inch = 15 feet. the actor is 60 inches tall. how tall does the monster appear in the movie? question 5 options: 720 feet 75 feet 4 feet 900 feet