JAMB Mathematics 2025 Objective — Question 10
Question 10 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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If the perimeter of a rectangle is 40cm and the length is 3cm more than twice the width, what is the area of the rectangle?
- A. 76.14cm²
- B. 81.22cm²Correct
- C. 69.35cm²
- D. 85cm²
Explanation
L=2B+3. 2(2B+3+B)=40 ⇒ 3B+3=20 ⇒ B=17/3, L=43/3. Area=(43/3)(17/3)≈81.22cm².
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