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Two cones are similar. The surface area of the larger cone is 65π square inches. The surface area of the smaller cone is 41.6π square inches. The radius of the smaller cone is 6.4 inches. What is the radius of the larger cone?
A
8 inchesB
10 inchesC
11.52 inchesD
14.4 inches22
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Two triangular prisms are similar. The perimeter of each face of one prism is double the perimeter of the corresponding face of the other prism. How are the surface areas of the figures related?
A
The surface areas are the same.B
The surface area of the larger prism is 2 times the surface area of the smaller prism.C
The surface area of the larger prism is 4 times the surface area of the smaller prism.D
The surface area of the larger prism is 8 times the surface area of the smaller prism.23
An equilateral triangle is transformed twice to create a trapezoid:
A
30°B
60°C
90°D
120°
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