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M-207, , 20 - R, , The, , angle of elevation, , wer PT from, , o f the tower, nearest, , metre., , from a p0intor the top of a tower QR, 50 m high is 600., a point Q is 30°, Find the, height of the tower, PT,, , corrert to the, k, (4), , A60, , 30, , a, , (aThe 4th term of an AP is 22 and the 15"" term is 66. Find the, first term and the common, difference. Hence, find the sum of the series to 8 terms., (4), , 6) Use graph paper for this question., , regarding height (in cm) of 60 boys belonging to Class, conducted. The following data was recorded:, A, , survey, , Height in cm, , 10 of, , a, , school, , was, , No. of boys, , 135-140, 140-145, , 8, , 145-150, , 20, , 150-155, , 14, , 155-1600, , 160-165, , 6, , 165-1700, , 1, , aking 2 cm = height of 10 cm along one axis and 2 cm = 10 boys along the other axis,, araw an, , ogive of the above distribution. Use the graph to estimate the following, , () the median, , (ii)lower quartile, , E n t above 158 cm is considered tall, find the number of boys in the classwhoare, (6), , tall