Unit Test — Unit test Answers

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The diameter of a circle is 4 cm. Which equation can be used to find its circumference?

A
C = pi times 2
Option A
B
C = pi times 4
Option B
C
C = StartFraction pi times 4 over 2 EndFraction
Option C
D
C = StartFraction pi times 4 over 4 EndFraction
Option D
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A composite figure has a radius of 10 cm. What is the area of this composite figure? Use 3.14 for .

Question illustration
A
23.55 centimeters squared
Option A
B
78.5 centimeters squared
Option B
C
235.5 centimeters squared
Option C
D
314 centimeters squared
Option D

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