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Free ASVAB Section 6: Mathematics Knowledge Exam Braindumps
ASVAB Section Six : Mathematics Knowledge Questions 56–60 (page: 13)

Updated On: 9-Feb-2026

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QUESTION: 56

√(5 + x)2 = ______________.

5 – x
5 + x
√5 – √x
√5 + √x

Answer(s): B

Explanation:

This is so easy that it may tempt you to think that the correct answer is too obvious. The square root of (5 + x)2 is simply 5 + x.

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QUESTION: 57

(3 × 3)(5 – 3)(6 + 2) = x2.
What’s the value of x?

6
12
144
64

Answer(s): B

Explanation:

First solve the left side of the equation: (9)(2)(8) = 144. So x2 = 144. Find the square root of each side: x = 12.

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QUESTION: 58

If −5x = 25, x equals ____________.

–5
5
10
0

Answer(s): A

Explanation:

Isolate x by dividing each side of the equation by –5:
−5x ÷ −5 = 25 ÷ −5x = −5

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QUESTION: 59

A circle measures 12 feet in diameter. What’s its area to the nearest foot?

452
24
113
48

Answer(s): C

Explanation:

The area of a circle equals π times the radius squared. The radius is 1⁄2 the diameter.
A = πr2. A = π62= π36. If π is approximately 3.14, the area of the circle is approximately 3.14 × 36 or 113 feet.

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QUESTION: 60

A square box has 6-inch sides. What’s its volume?

18 cubic inches
216 cubic inches
12 cubic inches
36 cubic inches

Answer(s): B

Explanation:

Volume equals length × width × height (V = lwh): 6 × 6 × 6 = 216 cubic inches.

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