Question
The volume of a cube is 729 cm 3 . If the cost
of painting the cube is Rs. 10 per cm 2 , then find the cost of painting five faces of the cube.Solution
Let the length of the edge of the cube be ‘x’ cm.
Volume of cube = x 3
ATQ;
729 = x 3
Or, x = 9
Area of five faces of the cube = 5x 2 = 5 × 9 × 9 = 405 cm 2
Required cost = 405 × 10 = Rs. 4,050
If 'W ! K + G < S' is true, then how is U related to W?
'A # B' means 'A is the father of B'. 'A @ B' means 'A is the son of B'. 'A & B' means 'A is the wife of B'. 'A % B' means 'A is the sister of B'. If U ...
A $ B' means 'A is the mother of B'. 'A % B' means 'A is the wife of B'. 'A @ B' means 'A is the sister of B'. 'A # B' means 'A is the son of B'. If 'D...
'A + B' means 'A is the sister of B'. 'A - B' means 'A is the brother of B'. 'A X B' means 'A is the father of B'. 'A ÷ B' means 'A is the wife of B'. ...
'A # B' means 'A is the mother of B'. 'A & B' means 'A is the spouse of B'. 'A % B' means 'A is the sister-in-law of B'. If F # E, D & F, B % F, A & C #...
Answer the questions based on the information given below.
L + M means L is the wife of M.
L ? M means L is the son of M.
L...
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B $ C means ‘C’ is the husband of ‘B’
B @ C means ‘C’ is the moth...
Answer the questions based on the information given below.
B $ C means ‘C’ is the husband of ‘B’
B @ C means ‘C’ is the moth...
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