What is the area of the real object that the scale drawing models? Scale factor 13
Area
12 square cm
Scale drawing
Real object
O A. 12 square cm
OB. 4 square cm
O C. 108 square cm
D. 360 square cm

108cm²

Step-by-step explanation:

dimensions of the scaled-down object L= 4 W = 3

3 x 3 = 9   3 x 4 = 12

dimensions of the real object L = 12 W = 9   12 x 9 = 108

1.0

step-by-step explanation:

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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