CBSE [Delhi] _X_Mathematics_2010_Set I
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Q2
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Q3
If P (2, p) is the midpoint of the line segment joining the points A(6, 5) and B (2, 11), find the value p.
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Q4
If A(1, 2), B(4, 3) and C(6,6) are the three vertices of a parallelogram ABCD, find the coordinates of the fourth vertex D.
Marks:1Answer:
Since diagonals of a parallelogram bisect to each other.
Consider M(p, q) is the mid – point of both the diagonals AC and BD. Also, let the coordinates of the vertex D are
(x, y).
By mid point formula, we get
M is the midpoint of BD.
So,

Q5
The slant height of a frustum of a cone is 4 cm and the perimeters (circumferences) of its circular ends are 18 cm and 6 cm. Find the curved surface area of the frustum.
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Q6
A card is drawn at random from a well shuffled pack of 52 playing cards. Find the probability of getting a red face card.
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