Question

The scale drawing of a concrete pad has a length of 9.1 cm, a depth of 2.2 cm and a width of 3.8 cm.

Using the scale drawing, what is the actual depth of the concrete pad if the actual width is 418 cm?
A) 101.1 cm
B) 242 cm
C) 432 cm
D) 668.8 cm

Answer 1

Scale factor = 418 cm/3.8 cm = 110

(2.2 cm)(110) = 242 cm

The correct answer is B.