a classroom has a length of 30 feet and a width of 15 feet a scale drawing for the room used the scale 1cm= 5 feet what was the length and width of the drawing

Question

a classroom has a length of 30 feet and a width of 15 feet a scale drawing for the room used the scale 1cm= 5 feet what was the length and width of the drawing

Answer 1

The scale factor is 1 cm = 5 feet.

One easy method is to use The Multiplicative Identity, that is, 1. Any number multiplied by 1 has the same value, although the units may change. This is also called dimensional analysis.

Here:

1 = (1 cm) / (5 feet)

1 = (5 feet) / (1 cm)

Use the one that allows units to cancel.

30 feet

(30 feet) * (1 cm) / (5 feet)

6 cm

15 feet

(15 feet) * (1 cm) / (5 feet)

3 cm

The length of the scale drawing is 6 cm and the width is 3 cm.