Question

in a scale drawing of a house, 1 inch represents 7 feet. scale 1 in : 7 ft answer the following. (a) in the scale drawing, the height of the house is 4 inches. what is the height of the real house? feet (b) the length of the real house is 21 feet. what is the length of the house in the scale drawing? inches

Explanation:

Step1: Use scale for part (a)

Since 1 in represents 7 ft, for a 4 - inch height in scale drawing, the real - height is $4\times7$.
$4\times7 = 28$

Step2: Use scale for part (b)

If 1 in represents 7 ft, and the real - length is 21 ft, then the length in scale drawing is $\frac{21}{7}$.
$\frac{21}{7}=3$

Answer:

(a) 28
(b) 3