STAAR Chart

Question 1

An observatory is shaped like a cylinder standing on one of its bases with a dome on top. The diameter of the floor of the observatory is 64 feet, as shown in the diagram.

Which measurement is closest to the circumference of the base of the observatory in feet?

A 200.96 ft

B 3,215.36 ft

C 100.48 ft

D 401.92 ft


Question 2

A number cube with faces labeled from 1 to 6 was rolled 20 times. Each time the number cube was rolled, the number showing on the top face was recorded. The table shows the results.


Number Showing
on Top Face		 Frequency
1 0
2 3
3 3
4 6
5 3
6 5

Based on these results, what is the experimental probability that the next time the number cube is rolled it will land with 5 or 6 showing on the top face?


F x = 4.25 + y

G x = 4.25y

H y = 4.25 + x

J y = 4.25x


Question 3

Cheddar cheese costs $4.25 per pound. Which equation best represents y, the total cost of x pounds of cheddar cheese?


A x = 4.25 + y

B x = 4.25y

C y = 4.25 + x

D y = 4.25x






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