The perimeter of a rectangle is 2(l + w) = 30. If length is 8, what is width?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the CCC Common Core Pre-Test with our comprehensive quiz. Utilize detailed flashcards and multiple-choice questions, each accompanied by insights and explanations, to enhance your readiness for the exam!

Multiple Choice

The perimeter of a rectangle is 2(l + w) = 30. If length is 8, what is width?

Explanation:
The key idea is using the perimeter formula for a rectangle and then solving for the missing side. The perimeter 30 means the sum of length and width is 15, since 2(l + w) = 30 → l + w = 15. If the length is 8, the width must be 15 − 8 = 7. You can check: 2(8 + 7) = 2 × 15 = 30, which matches. Other options would not give a perimeter of 30 (for example, width 14 gives 44, width 8 gives 32, width 15 gives 46). So the width is 7.

The key idea is using the perimeter formula for a rectangle and then solving for the missing side. The perimeter 30 means the sum of length and width is 15, since 2(l + w) = 30 → l + w = 15. If the length is 8, the width must be 15 − 8 = 7. You can check: 2(8 + 7) = 2 × 15 = 30, which matches. Other options would not give a perimeter of 30 (for example, width 14 gives 44, width 8 gives 32, width 15 gives 46). So the width is 7.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy