Question
A cuboid is formed by combining two identical cubes. If
the surface area of each cube is 600 cm², find the total surface area of the resulting cuboid.Solution
Each cube has surface area = 600 cm², so two cubes = 1200 cm² When joined face-to-face, one face from each cube (total 2 faces) gets hidden Each face = 10×10=100 cm², So, hidden area = 200 cm² Total visible surface area = 1200 − 200 = 1000 cm²
If 22 – 16 means 352, 450 + 50 means 9, 9 ÷ 3 means 12, 11 x 8 means 3, then ' 280 – 5 x 240 ÷ 450 + 9 x 26' = ?
 By interchanging which two signs the question will be correct?
15 + 5 ÷ 2 – 9 × 3 = 22
If 14 (16) 8 and 28 (20) 5, then what is the value of A in 63 (A) 4?
If '@' means '÷', '#' means ' X ', '$' means '+' and '%' means '-' then what would be the value of the expression given below?
Expression: 25 # ...
- If 'P' means 'division', 'Q' means 'subtraction', 'R' means 'addition', and 'S' means 'multiplication', then what is the value of the expression:
{... 157 + 256 – 88 ÷ 8 × 4 = 117
What will be the value of the given expression after the following interchanges?
Expression: 324 + 22 - 7 X 4 ÷ 36 - 28
Interchanges: Sig...
In a certain code of language, ‘+’ represents ‘×’, ‘-‘ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘-‘. Wh...
Which sequence of mathematical symbols among given sequences must be inserted in place of the (?) in order to obtain the desired result?
(250 ? 7...
What will be the value of expression if the numbers/digits ‘(42)’ and ‘(16)’ are interchanged?
16 - 32 ÷ 8 × 12 + 11 + 42
...
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