8학년 4분기 시험

Use π ≈ 3.14. Include units.

1. 1
   Find the area. 
2. 2
   Find the area. 

Find each missing side. Round to the nearest tenth if needed.

1. 11
   ? = 
2. 12
   ? = 
3. 13
   ? = 
4. 14
   ? = 

Can the three lengths be the sides of a right triangle? Write yes or no.

1. 15
   $7$, $17$, $15$ 
2. 16
   $25$, $7$, $25$ 
3. 17
   $12$, $15$, $9$ 
4. 18
   $8$, $25$, $24$ 

Round to the nearest tenth if needed.

1. 19
   A $34$-foot ladder leans against a wall. Its base is $16$ feet from the wall. How high up the wall does the ladder reach?

Use the box plot to answer each question.

1. 20
   Range = 
2. 21
   Interquartile range = 

Use the box plots to answer each question.

1. 22
   Greater median: 
2. 23
   Greater IQR: 

Answer each question.

1. 24
   $37,34,43,34,69,44$. Which value is the outlier? What is the mean with it and without it?

Write independent or dependent.

1. 25
   Pick a marble from a bag, put it back, then pick another marble. 

Marbles are picked without looking. Write each probability as a fraction in simplest form.

1. 26
   Put the first marble back. P(green, then red) = 
2. 27
   Keep the first marble. P(green, then green) = 
3. 28
   Keep the first marble. P(blue, then red) = 

Marbles are picked without looking. Write probabilities in simplest form.

1. 29
   Take a cookie from a jar and eat it, then take another cookie. 
2. 30
   Put the first marble back. P(red, then yellow) =