1.
Find the perimeter of this triangle after it has been scaled by 3.
A.
21 km
B.
18 km
C.
40 km
D.
54 km
Hint
2.
If the area of a parallelogram is
lh
, what is the area of the parallelogram after it has been scaled by a factor of 4?
A.
lh
+ 16
B.
4
lh
C.
16
lh
D.
lh
+ 4
Hint
3.
Find the area of the triangle after it has been scaled by a factor of
.
A.
13.33 cm
2
B.
17.32 cm
2
C.
23.09 cm
2
D.
10 cm
2
Hint
4.
Find the area of the circle after it has been scaled by a factor of 5.
A.
3.14 mm
2
B.
49.35 mm
2
C.
78.54 mm
2
D.
15.71 mm
2
Hint
5.
These two figures are similar. What is the scale factor from the small figure to the large figure?
A.
2
B.
2.5
C.
3
D.
1.5
Hint