Three solid metal cubes with edges 15 deca metre, 2 metre and 25 deca meters are melted and with the resulting metal, a new solid cube is formed. Find the surface area of the new cube.
Answers
Answer:
Let Z be the number
Z = 13x + 11 where x is the quotient when Z is divided by 13
Z = 17y + 9 where y is the quotient when Z is divided by 17
13x + 11 = 17y + 9
13x + 2 = 17y since x and y are quotients they should be whole numbers . Since y has to be a whole number the left hand side should be multiple of 17
The least possible value of x satisfying the condition is 9 and y will be 7
The answer is 13*9 + 11 = 128 or it is 17*7 + 9 = 128
This is the least number possible. There will be multiple answers and will increase in multiples 17*13 = 221 like 349 , 570, etc
hope that u r helpful
Step-by-step explanation:
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Answer:
Answer
We know that volume does not change.
Volume of cube =x 3 where xis side of cube
⇒15 3 + 12 3 +9 3 = a3
a3 =5832
a=18cm
⇒ Diagonal of cube =√3
=18√3
hence the ans is = 18 √3