కింద ఇచ్చిన ట్రెపీజియం ఆకారంలోని తోట వైశాల్యం ఎంత? ( అన్ని కొలతలు సెం.మీ.లలో ఇవ్వబడ్డాయి)

This question was previously asked in
NTPC Tier I (Held On: 30 Mar 2016 Shift 3)
View all RRB NTPC Papers >
  1. 60 చ. సెం.మీ
  2. 180 చ. సెం.మీ
  3. 210 చ. సెం.మీ
  4. 240 చ. సెం.మీ

Answer (Detailed Solution Below)

Option 4 : 240 చ. సెం.మీ
Free
RRB NTPC Graduate Level Full Test - 01
100 Qs. 100 Marks 90 Mins

Detailed Solution

Download Solution PDF

ఇచ్చిన బొమ్మ ప్రకారం,

 ΔBEF నుండి,

⇒ BF2 = BE2 + EF2

⇒ 132 = 122 + EF2

⇒ EF2 = 132 – 122 = 169 – 144 = 25

⇒ EF = 5 సెం.మీ

ఇచ్చిన బొమ్మ నుండి,

⇒ CD = EF = 5 సెం.మీ మరియు AB = DE = 15 సెం.మీ

⇒ CF = CD + DE + EF = 5 + 15 + 5 = 25 సెం.మీ

ట్రెపీజియం యొక్క వైశాల్యం = ½ × BE × (AB + CF) = ½ × 12 (15 + 25) = 240 చ. సెం.మీ

Latest RRB NTPC Updates

Last updated on Jul 22, 2025

-> RRB NTPC Undergraduate Exam 2025 will be conducted from 7th August 2025 to 8th September 2025. 

-> The RRB NTPC UG Admit Card 2025 will be released on 3rd August 2025 at its official website.

-> The RRB NTPC City Intimation Slip 2025 will be available for candidates from 29th July 2025. 

-> Check the Latest RRB NTPC Syllabus 2025 for Undergraduate and Graduate Posts. 

-> The RRB NTPC 2025 Notification was released for a total of 11558 vacancies. A total of 3445 Vacancies have been announced for Undergraduate posts while a total of 8114 vacancies are announced for Graduate-level posts in the Non-Technical Popular Categories (NTPC).

-> Prepare for the exam using RRB NTPC Previous Year Papers.

->  HTET Admit Card 2025 has been released on its official site

More Mensuration Questions

Hot Links: teen patti all app teen patti club apk teen patti joy 51 bonus teen patti master real cash