PQRS is a rhombus. The each sides of it is 40 cm. If PR = 64 cm and QS = (8x + 8). Then, the value of x is -

  1. 6
  2. 5
  3. 4
  4. 7

Answer (Detailed Solution Below)

Option 2 : 5
Free
UPSC CDS 01/2025 General Knowledge Full Mock Test
7.9 K Users
120 Questions 100 Marks 120 Mins

Detailed Solution

Download Solution PDF

F1 Ashish Singh 13.1.21 Pallavi D13

PR = 64 cm

Thus, PO = RO = 32 cm

QS = (8x + 8) cm

Thus, QO = OS = (4x + 4) cm

In Δ SOR –

\(S{R^2} = S{O^2} + R{O^2}\)

⇒ \({40^2} = {\left( {4{\rm{x}} + 4} \right)^2} + {\left( {32} \right)^2}\)

⇒ 402 – 322 = (4x + 4)2

⇒ 4x + 4 = 24

⇒ 4x + 4 = 24

⇒ 4x = 20

⇒ x = 5 cm

Latest CDS Updates

Last updated on May 29, 2025

-> The UPSC CDS 2 Notification has been released at upsconline.gov.in. for 453 vacancies.

-> Candidates can apply online from 28th May to 17th June 2025.

-> The CDS 2 Exam will be held on 14th September 2025.

-> Attempt UPSC CDS Free Mock Test to boost your score.

-> The selection process includes Written Examination, SSB Interview, Document Verification, and Medical Examination.  

-> Refer to the CDS Previous Year Papers to enhance your preparation. 

Get Free Access Now
Hot Links: teen patti wala game teen patti star teen patti online