+1982 
Determine the scale factor (large to small) of the similar figures.
A) 1:2
B) 2:1
C) 3:1
D) 3:2
E) 5:3
Find the area of the circle, given the square has an area of 144 cm^2 (leave your answer in terms of π).
A) 12π cm^2
B) 24π cm^2
C) 36π cm^2
D) 72π cm^2
E) 144π cm^2
+220 1. The length of the larger rectangle is 4, and the smaller one is 2. The width of the large rectangle is 2, and the smaller one is 1.
4/2 = 2/1 = 2
The scale factor of the similar figures is 2:1 (B)
2. The square has area of 144 cm^2, meaning that it has side length 12. This means that the diameter of the circle is 12, so the radius is 6
The formula for the area of a circle is πr^2.
Area = π36, or 36π cm^2 (E)
+220 1. The length of the larger rectangle is 4, and the smaller one is 2. The width of the large rectangle is 2, and the smaller one is 1.
4/2 = 2/1 = 2
The scale factor of the similar figures is 2:1 (B)
2. The square has area of 144 cm^2, meaning that it has side length 12. This means that the diameter of the circle is 12, so the radius is 6
The formula for the area of a circle is πr^2.
Area = π36, or 36π cm^2 (E)
