1. What is 18 in simplified radical form?
A. 9 and 2
B. 2 and 9
C. 3 and 2
D. 2 and 3
2. What is 28 in simplified radical form?
A. 2 and 5
B. 2 and 7
C. 7 and 2
D. 4 and 7
3. What is 252 in simplified radical form?
A. 21 and 12
B. 12 and 21
C. 7 and 6
D. 6 and 7
4. A square fishpond has an area of 68 square feet. To the nearest tenth, what is the length of one side of the fishpond?
A. 8.2 ft
B. 9.4 ft
C. 17.0 ft
D. 34.0 ft
5. A square-shaped billboard has an area of 295 square feet. Christy wants to put lights around the entire perimeter of the billboard. Approximately how much frame does she need?
A. 12 feet
B. 17 feet
C. 69 feet
D. 74 feet
Answer (2)
1. 18 = 9 ∗ 2 = 3 2
Answer: C
28 = 4 ∗ 7 = 2 7
Answer: B
3. 252 = 36 ∗ 7 = 6 7
Answer: D
4. 68 f t 2 = 68 ≈ 8 , 3
Answer: A
252 f t 2 = 252 ≈ 17 , 17
BUT she want it all around so:
17 , 17 ∗ 4 = 68 , 68 ≈ 69
Answer: C
The simplified radical forms are: 1. C (3√2), 2. B (2√7), 3. D (6√7). The lengths for the fishpond and billboard yield answers: 4. A (8.2 ft), 5. C (69 ft).
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