LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
11 views
in Aptitude by (54.3k points)
closed by
How many cubes, each of edge (7/2) cm can be cut from a cube of edge 7 cm
1. 1
2. 3
3. 9
4. 8

1 Answer

0 votes
by (30.0k points)
selected by
 
Best answer
Correct Answer - Option 4 : 8

Given

Edge of cube = 7 cm

Edge of new cube = (7/2) cm

Formula used

Volume of cube = (edge)3

Calculation

Let x is the cube of radius (7/2) cm formed from a cube of edge 7 cm

⇒ 7 × 7 × 7 = x × (7/2) × (7/2) × (7/2)

⇒ (7 × 7 × 7 × 2 × 2 × 2)/(7 × 7 × 7) = x

⇒ x = 8

∴ Number of cubes cut out from a cube of edge 7 cm is 8

 

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

...