6th Grade Math Textbook, Progress

and h
10 ft and w
4 yd

10. P
    4 s, when P
    36 cm 11. V
    e^3 , when e
    6 in.


11. A
    bh, when A
    150 m^2 13. abc
    180°, when a
    57°
    and h
    25 m and c
    39°

Use the Volume formula, V

w h, to find each missing dimension.

4. V
   75 m^3 ,
   
   5 m, 5. V
   1504 ft^3 ,
   
   ft,
   w
   5 m, h
   m w
   4 ft, h
   8 ft


5. V
   2304 cm^3 ,
   
   32 cm, 7. V
   2912 in.^3 ,
   
   32 in.,
   w
   cm, h
   8 cm w
   13 in., h
   in.

Describe the formula and solve for the missing dimension.

Use the table on page 547.

8. A
   ^12 bh, when A
   200 ft^2 9. P
   2(
   w), when
   
   7 yd

??

?

?

Write the formula that you would use to solve the problem. Then solve it.

14. A triangle has an area of 20 cm^2 and a
    height of 5 cm. How long is the base?


15. The length and width of a rectangle
    are doubled. Write a formula for the
    new area. How is the area changed?


16. Write a formula that expresses the
    following relationship: Savings (s) are
    what is left after subtracting taxes (t)
    and expenses (e) from wages (w).
    15. The perimeter of a square tile is 28 m.
    What is its area?
    17. A plane travels 2750 miles. If it flies
    at a rate of 500 miles per hour, how
    many hours does the plane fly?
    19. Compare your formula in exercise 18
    with that of a classmate. Then find s
    when w
    $950.50, t
    $266.14, and
    e
    $499.

Write a new formula for finding the indicated variable.

(Hint:Write a related sentence.)

20. Selling Price
    Cost Profit, or 21. Circumference
    length of
    S
    CP. Find C. diameter, or C
    d. Find d.


21. Interest
    principal rate time, or 23. Area
    base height, or A
    bh.
    I
    prt. Find r. Find h.

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