32.15 meters in word form

I'll give brainliest if you answer right : )

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much