Question
The sum of the total surface areas of two cubes is 1272
cm2. If the product of the length of their edges is 98 cm2, then find the difference (in cm) between the lengths of their edges.Solution
Let the length of the edges of the two cubes be ‘a’ cm and ‘b’ cm, respectively According to the question, 6a2 + 6b2 = 1272 Or, a2 + b2 = 1272/6 = 212 And, ab = 98 Using the formula,  x2 + y2 = (x – y)2 + 2xy 212 = (a – b)2 + 2 × 98 Or, (a – b)2 = 212 – 196 Or, (a – b)2 = 16 Or, a – b = ±4 So desired difference = 4 cmÂ
If "I & J # S % O * D & L @ N" is definitely true, then how is O related to J?
'A # B' means 'A is the husband of B'. 'A @ B' means 'A is the mother of B'. 'A & B' means 'A is the sister of B'. 'A $ B' means 'A is the child of B'. ...
If 'A @ B' means 'A is the daughter of B'. 'A & B' means 'A is the husband of B'. 'A % B' means 'A is the wife of B'. 'A $ B' means 'A is mother of B'....
If ‘L#H$I@G?W*K’ is true, then, how is K related to L?
If 'A@B' means 'A is father of B', 'A#B' means 'A is wife of B', 'A$B' means 'A is sister of B', 'A%B' means 'A is brother of B'. If 'R @ S $ T # V @ U ...
'A@B' means 'A is the father of B'. 'A#B' means 'A is the sister of B'. 'A$B' means 'A is the brother of B'. 'A%B' means 'A is the wife of B'. If F $ G...
‘A@B’ means ‘A is the father of B’. ‘A#B’ means ‘A is the sister of B’. ‘A$B’ means ‘A is the brother of B’. ‘A%B’ means �...
Answer the questions based on the information given below.
In a certain language,
A & B means A is married to B
A # B means...
In a certain code language,
X + Y means 'X is the father of Y'
X - Y means 'X is the brother of Y',
X X Y means 'X is the sister of...
If P is the father of I, then which of the following symbol will correct it in the given blank?
Q % P __ O # I
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