Use app×
QUIZARD
QUIZARD
JEE MAIN 2026 Crash Course
NEET 2026 Crash Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
293 views
in Mensuration by (100k points)
closed by
घनाभ की भुजाऐं `1:2:3` में हैं तथा उसका पृष्ठ क्षेत्रफल `88cm^(2)` है। घनाभ का आयतन ज्ञात करें?
A. `48cm^(3)`
B. `64cm^(3)`
C. `16cm^(3)`
D. `100 cm^(3)`

1 Answer

0 votes
by (101k points)
selected by
 
Best answer
Correct Answer - A
घनाभ की भुजाओं का अनुपात `=1:2:3`
Let `l=x,b=2x,h=3x`
पृष्ठीय क्षेत्रफल `=88cm^(2)`
`2(lb+bh+hl)=88`
`2(2x^(2)+6x^(2)+3x^(2))=88`
`=11x^(2)=44`
`x^(2)=4`
`x=2`
`:. l=2cm, b=4cm`,
`h=6cm`
`:.` आयतन `=l b h`
`=2xx4xx6`
`=48cm^(3)`

Related questions

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...