Radicals Quiz

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Radicals Quiz

Multiple Choice

Identify the choice that best completes the statement or answers the question.

1. Identify the index of

A.

.

B.

3 C.

7

2. Identify the radicand of

A.

4 B.

3. Evaluate

A.

2

4. Evaluate

A.

–4

5. Evaluate

A. 0.7

.

.

.

.

B.

2.6

B.

impossible

B. 0.007

C.

6

C.

16

C.

–12.8

C. 0.1143

D.

2

D.

8

D.

1.41

D.

4

D. 0.49

6. Evaluate

A.

.

B. C.

7. Evaluate

A.

0.0085

.

B.

0.0042 C.

0.13

8. Write an equivalent form of 0.4 as a fourth root.

A.

B.

C.

9. Which of these roots lies between 3 and 4?

, , ,

A.

B.

C.

D.

D.

0.013

D.

D.

Problem (Must Show Work)

10. A cube has surface area 2646 m

2

. What is its volume?

11. Use factoring to determine whether 4913 is a perfect square, a perfect cube, or neither.

12. Germaine wants to paint a cube with volume 2744 m

3

. Each tub of paint covers 79 m

2

. How many tubs of paint does Germaine need to paint the cube?

13. A cube has volume 9261 cubic inches. Determine the area of one face of the cube.

14. Evaluate .

15. Evaluate .

16. Estimate the value of to one decimal place.

Radicals Quiz

Answer Section

MULTIPLE CHOICE

1. B

2. B

3. A

4. A

5. A

6. A

7. C

8. A

9. C

PROBLEM

10. To calculate the volume, first determine the edge length of the cube.

The surface area of a cube is the sum of the areas of its 6 congruent square faces.

So, the area, A , of one face is:

The edge length, e , of the cube is the square root of the area of one square face.

So, the volume, V , of the cube is the cube of its edge length.

The volume of the cube is 9261 m

3

.

11. Write 4913 as a product of its prime factors.

12. To calculate how many tubs of paint are needed, first determine the surface area of the cube.

The edge length, e , of a cube is equal to the cube root of its volume.

The surface area, SA , of a cube is the sum of the areas of its 6 congruent square faces.

Calculate how many tubs of paint are needed:

Germaine needs 15 tubs of paint to paint the cube.

13. 441 square inches

14.

15.

16. 5.9

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