Writing Workshop: Who are the Most Influential People in History? — Unit test
Question 17 • TX-World History Studies
A rectangle’s length is three times its width, w. Its area is 243 square units. Which equation can be used to find the width of the rectangle?
Answer
A
w2 = 3(243)
B
3w2 = 243
C
4w2 = 243
D
3w2 = 3(243)
Explanation
The rectangle’s length is 3w and its width is w. Using area = length × width gives (3w)(w) = 243, or 3w² = 243. Therefore, the correct choice is “3w² = 243.”
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