Grade 8 Quarter 4 Test

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
   $13$, $5$, $13$ 
2. 16
   $40$, $30$, $50$ 
3. 17
   $15$, $8$, $18$ 
4. 18
   $2.5$, $6$, $6$ 

Round to the nearest tenth if needed.

1. 19
   A wire runs from the top of a $24$-foot pole to a stake in the ground $10$ feet from the pole's base. How long is the wire?

Use the box plot to answer each question.

1. 20
   Lower quartile = 
2. 21
   Range = 

Use the box plots to answer each question.

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

Answer each question.

1. 24
   $37,28,35,56,30,36$. Which value is the outlier? What is the mean with it and without it?

Write independent or dependent.

1. 25
   Spin a spinner, then spin it again. 

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

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

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

1. 29
   Roll a number cube, then flip a coin. 
2. 30
   Put the first marble back. P(green, then blue) =