Question

PLEASE HELP ASAP

What is the area of the real object that the scale drawing models?
A. 20 sq cm
B. 180 sq cm
C. 120 sq cm
D. 60 sq cm

Answer 1

B. 180 sq cm

Explanation:

if the area of the scale drawing is 20 cm then the width must be 5cm and the length is 4cm.

Since the scale factor is 1:3 you multiply the side lenghts by 3. So the width of the real object is 15 cm and the length is 12 cm.

Multiply L x W to get area, 15 x 12 = 180