You want to produce a scale drawing of your living room, which is 21 ft by 28 ft. If you use a scale of 5 in. = 7 ft, what will be the dimensions of your scale drawing?

Answer:15 in. by 20 in.Step-by-step explanation:Dimensions of living room :Length = 21 feetWidth = 28 feetScale : 5 in. = 7 ftSo, 1 ft. = [tex]\frac{5}{7}[/tex] in.So, 21 feet = [tex]21 \times \frac{5}{7}[/tex] in.21 feet = 15 inches Now 28 feet = [tex]28 \times \frac{5}{7}[/tex] in.28 feet = 20 inches So, the dimensions of the scale drawing = 15 in. by 20 in. Hence the dimensions of the scale drawing is 15 in. by 20 in.                                                      

5 in --------- 7 ftx in  --------- 21 ftx = (5 x 21)/7=15 inOtherwise:5 in ---------- 7 ftx in  ---------- 28 ftx = (5 x 28)/7 = 20 inDimentions of drawing is 15 x 20 in