A rectangle has a fixed perimeter of 32 units. What is the greatest possible area of the rectangle?
Answer and explanation
Correct answer: C. 64 square units
- Step 1: With sides and , the area is greatest when , giving . Answer: 64 square units. Why not the others: 72 square units, 80 square units and 128 square units don't fit.
Practise more Calculus, algebra, series and probability.
Free questions with an explanation for every one, and full timed Stúdentspróf (Iceland) mock tests.