Question
The sides of a cuboid are in the ratio 1:2:4. If its volume
is 1728 cm³, find the sum of its dimensions.Solution
ATQ,
Let the dimensions be x cm, 2x cm, and 4x cm respectively
According to the question,
x × 2x × 4x = 1728
Or, 8x³ = 1728
Or, x³ = 216
Or, x = 6
Therefore, sum of dimensions = x + 2x + 4x = 7x = 42 cm
Given below are two numbers series 'I' and 'II' and each series has a wrong (odd one out) number. The number that should come in place of the wrong num...
1331 1000 729 512 ? 216
...7 26 238 962 8522 ...
Direction: Which of the following will replace ‘?’ in the given question?
342, ‘?’, 420, 462, 506, 552, 60
7 12 33 ? 635 3804
...If 6 4 x 5.75 9,
Then, (x²-1) = ?
...6 7 15 46 185 ?
...Identify the given logic and complete the series with the correct option. 12, 15, 18, 20,?
(45)2 ÷ ∛729 + (35)2 ÷ 1.4 =?
2187, 1458, 972, ?, 432, 288
