# Interactive video lesson plan for: CBSE sample papers for Class 9 Maths SA2 Paper 1 Q15 to Q24 (Part 2)

#### Activity overview:

CBSE sample papers for Class 9 Maths SA2 Paper 1 Q15 to Q24 (Part 2)
http://www.learncbse.in/cbse-sample-papers/
00:15 CBSE sample papers for Class 9 Maths SA2 Paper 1 q15 In the given figure, ABCD is a cyclic quadrilateral with opposite sides AD and BC produced to meet at the point E. If ÐDAB =30° and ÐABC=110°, then find ÐDEC.
04:37 CBSE sample papers for Class 9 Maths SA2 Paper 1 q16 Sumit has built a cubical water rank with lid for his house, with each outer edge
1.5 m long. He gets the outer surface of the rank excluding the base covered with square tiles of side 25 cm. Find how much he would spend for the riles. if the cost of tiles is Rs.360 per dozen.
08:49 CBSE sample papers for Class 9 Maths SA2 Paper 1 q17 Draw the graph of the linear equation 4x + y = 6.At what points the graph of the equation cuts the x-axis and the y-axis?
11:30 CBSE sample papers for Class 9 Maths SA2 Paper 1 q18 A student opens his book and notes down the units digit on the right hand page of his book. He repeats the process for 150 times. The outcomes are recorded as below:
14:38 CBSE sample papers for Class 9 Maths SA2 Paper 1 q19 P is any point on the median AD of DABC. Show that ar(APB) = ar(ACP).
17:13 CBSE sample papers for Class 9 Maths SA2 Paper 1 q20 The mean age of 20 students is 15 years. If the age of teacher is included. then mean age becomes 17 years. Find the age of the teacher.
19:13 CBSE sample papers for Class 9 Maths SA2 Paper 1 q21 The given values of x and yare thought to satisfy a linear equation. Draw the graph
using the values of x and y as given in the table.
At what point the graph of the linear equation :
(I) cuts the x-axis ? (II) cuts the y-axis?
22:54 CBSE sample papers for Class 9 Maths SA2 Paper 1 q22 If the diagonals of a parallelogram are equal. then show that it is a rectangle.
26:23 CBSE sample papers for Class 9 Maths SA2 Paper 1 q23 If circles are drawn taking two sides of a triangle as diameters, prove that the pointof intersection of these circles lie on the third side.
29:14 CBSE sample papers for Class 9 Maths SA2 Paper 1 q24 A heap of wheat is in the form of a cone. Diameter of the base of the heap is 8mand height Is 3 m. Find its volume. The heap is to be covered by canvas to protect
it from rain find the area of canvas required.

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