Chapter 10.1-10.4 ReviewUnderstand how to use formulas to find area and

perimeter

Success Criteria: I can identify vocabulary I can use formulas to find area

Today’s Agenda Do Now Check HW Performance Task

Tuesday/Test Wednesday

DO NOW: A particular rectangle has an area of 36 square feet and a perimeter of 26 feet. If the rectangle is scaled (dilated) by a factor of 3, what would be the perimeter and area of the resulting image?

Chapter 10.1-10.4 ReviewUnderstand how to use formulas to find area and

perimeter

Success Criteria: I can identify vocabulary I can use formulas to find area

Today’s Agenda Do Now Stuck Points Finish Review (first half of class)

Check review (second half of class) Performance Task Tuesday/Test

Wednesday

DO NOW: The wallpaper pattern shown is a rectangle with a base of 4 ft. and a height of 3 ft. Use the grid to find the area of the shaded kite. If the kite’s wall paper pattern costs $24 per square foot to manufacture. How much will it cost just to create the kite? A = 3 ft2

$72 per sq. ft.

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

Find the area of the Kite

1.

2.

3.

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

Find the area the parallelogram

4.

5.

6.

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

Find the area of the triangle.

7.

8.

9.

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

Find the total area of the combined figures.

10.

11.

12.

13.

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

Find the area of the trapezoids.

14.

15.

16.

17.

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

Find the area of each rhombus.

18.

19.

20.

21.

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

Find the value of h.

22.

23.

24.

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

Find the area of the regular polygons.

25.

26.

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

Find the area of the regular polygon.

27.

28.

29.

The longer base of a right trapezoid is 12 ft. The longer base of a similar right trapezoid is 30 ft. The area of the smaller right trapezoid is 20 ft2. What is the area of the larger right trapezoid?

The area of a regular nonagon is 34 m2. What is the area of a regular nonagon with sides five times the sides of the smaller nonagon?

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

30.

31.

Two similar parallelograms have areas 125 m2 and 80 m2. The height of the larger parallelogram is 10 m. What are the lengths of the bases of both parallelograms?

The longer base of a trapezoid is 8 ft. The longer base of a similar trapezoid is 13 ft. The area of the smaller trapezoid is 240 ft2. What is the area of the larger trapezoid?

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

32.

33.

Two similar parallelograms have areas 72 m2 and 32 m2. The height of the larger parallelogram is 12 m. What are the lengths of the bases of both parallelograms?

The longer sides of a parallelogram are 6 ft. The longer sides of a similar parallelogram are 15 ft. The area of the smaller parallelogram is 27 ft2. What is the area of the larger parallelogram?

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

34.

35.

How would increasing the length and width of a rectangle by a scale factor of 4 affect the area of the new figure? Explain.

The shortest side of a pentagon is 4 cm. The shortest side of a similar pentagon is 9 cm. The area of the larger pentagon is 243 cm2. What is the area of the smaller pentagon?

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

36.

37.

A stop sign is a regular octagon. Each side of the sign is 12.6 in. long. The area of the stop sign is 770 in.2 What is the length of the apothem?

GIVE ALL ANSWERS in radical form or rounded to 2 decimals.

38.

Answers

1. 34 ft2

2. 24 cm2

3. 90 m2

4. 12 in2

5. 80 in2

6. 15 m2

7. 19.25 in2

8. 28.6 m2

9. 39 ft2

10. 98 ft2

11. 560 ft2

12. 122.75 m2

13. 170 in2

14. 125 ft2

15. 116.25 m2

16. 67.88 ft2

17. 59.5 yds18. 15. 87 cm2

19. 70.15 ft2

20. 18 m2

21. 96 yds2

22. 6 units23. 7.2 units24. 1.6 units25. 187.06 m2

26. 82.04 in2

27. 1352 cm2

28. 72 cm2

29. 100 in2

30. 850 m2

31. 125 ft2

32. 633.75 ft2

33. 12.5m & 10m34. 168.75 ft2

35. 6 m and 4 m36. 48 cm2

37. The area would be 16 times greater; the area ratio equals the scale factor squared.38. 15.28 in