Geometry; 5/24

After going over the homework, we spent time today reinforcing how to work with volume and area ratio problems involving solid objects.  The main task is to determine the scale factor first, and then to set up an appropriate ratio to find the missing value.  We went over 3-4 problems together before spending the rest of the time working on the chapter 12 review assignment.  Chapter 12 test is tomorrow.

Assignment:  Chapter 12 review

Review sheet answers

1.  B = 276.3

     LA  = 650

     TA  =  1202.6

     Vol. =  2763

2.  B = 7.0

     LA  =  37.2

     TA  =  51.2

     Vol.  =  21.7

3.  B = 113.0

     LA = 286.4

     TA = 399.4

     Vol. = 527.5

     slant height = 15.2

4.  slant height = 17

     B = 256

     LA = 544

     TA = 800

     Vol. = 1280

5.   skipped

6.  B = 1808.6

     LA  =  3165.1

     TA = 6782.4

     Vol. = 37981.4

7.  slant height = 25

8.  height = 6

9.  skip

10.  skip

Similar Solids 

1.  a.  144 pi      b.  288 pi

2.  a.  9 pi          b.  9 pi / 2

3.  3

4.  32 pi / 3

5-6 skip

7.  yes

8.  a.  1:3      b.  1:9     c.  1:3      d.  1:27

9.  skip