• 📢 2024 results - 20% Students got invitation from top 10 selective schools.
  • 📢 2024 results - 69% Success Rate.
  • ✍️ Prepare with online topic-wise tests.
  • 📢 The 2025 New South Wales (NSW) Selective High School Placement Test will take place from Friday, May 2 to Sunday, May 4
  • 📢 New Free Online Batch Starting from 10th March 2025, 7Pm to 8:30Pm

The length of a rectangle is less than twice its breadth by 1 cm. The length of its diagonal is 17 cm. Find its length and breadth A. 15 cm, 8 cm B. 13 cm, 4 cm C. 10 cm, 6 cm D. 8 cm, 9 cm

Leave a Comment / Blog / By

Solution

L = 2B – 1, Diagonal = 17. D² = L²+ B²
⇒ 289 = (2B –1)²+ B²⇒ B = 8 & L = 15.
Also 8, 15, 17 is a Pythagorean triplet.
So answer can be reached directly.

Leave a Comment

Your email address will not be published. Required fields are marked *