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Day 12 Solve Using Square Roots – HOMEWORK

On All Problems – Round to the nearest hundredth (when necessary)

1. Evaluate: a. 0 b. 81 b. 169

2. With your calculator: a. 21 = _____________ b. 109 = _____________

(round to the nearest hundredth)

3. x2 = 25 4. x2 = 121 5. x2 = 10

4. 3x2 = 27 5. 2x2 – 32 = 0 6. 2m2 – 42 = 8

7. 7a2 + 8 = 3 8. 25b2 + 11 = 15 9. 13b2 + 10 = 26

10. 4 – x2 = -17 11. 2a2 – 9 = 11

12. You have a square coffee table in your family room that has an area of 196 inches. What is the length of one

side of the coffee table?

13. You have a square flower garden that has an area of 400 square yards. What is the length of one side of the

garden?

14. FALLING OBJECT: Fenway Park is a Major League Baseball park in Boston, Massachusetts. The park offers seats on top of the left field wall. A person sitting in one of these seats accidently drops his sunglasses on the field. The height h (in feet) of the sunglasses can be modeled by the function h = -16t2 + 38 where t is the time (in seconds) since the sunglasses were dropped. Find the time it takes for the sunglasses to reach the field. Round your answer to the nearest hundredth of a second.

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