wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A cuboid of plasticine of sides 5cm,2cm,5cm. How many such cuboids will he need to form a cube
How to find the cube root of 1331 without prime factorizing.

Open in App
Solution

Dimensions of Cuboid =5,2,5
say the length of cube is 'a' units
Volume of Cuboid = 5×2×5=50cm3
Volume of cube =a3cm3
No. of cuboids needed to form the cube =(a350)
Since, you have not given the dimension of the cube,
(2) Cube root of 1331
Make a group of 3 digits 1 331
The first group is 331 will give you the unit digit of the cube root i.e. 1
Now, take the 2nd group
13=123=8
2o, we cannot mole more than 1 as 8>1
Tens digits is 1
So, the number is 1
i.e, 113=1331
Another eqs 857375
857 375
unit digit of cube root =5
Also, 93<857<103
95 Ans

flag
Suggest Corrections
thumbs-up
3
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon