Summative Assessment – II (SA-2) 2017 Answer Key | CBSE Board

Q.1 \frac{3}{4}

Q.2 \theta = 30 degree

Q.3 OP = r\sqrt{2}

Q.4 K = 18

Q.5 5cm

Q.6 —–

Q.7 a = -\frac{3}{2}

Q.8 R (0, 1)

Q.9 19

Q.10 K = \frac{1}{2}

Q.11 a) \frac{9}{49} b) \frac{23}{49} c) \frac{3}{49}

Q.12 25\sqrt{3}

Q.13 —–

Q.14 \frac{8 + 3\sqrt{2}}{2}, \frac{8 - 3\sqrt{2}}{2}

Q.15 a = 14, d = \pm 2

Q.16 \frac{49}{2}cm^{2}

Q.17 Area of Minor Segment = 28.5 cm^{2}, Area of Major Segment = 285.5 cm^{2}

Q.18 16 \frac{1}{2} mins

Q.19 h = 2.5 meters

Q.20 286/7cm^{2}

Q.21 i) \frac{15}{33} ii) \frac{18}{33} iii) \frac{3}{33} iv) \frac{8}{33}

Q.22 120 meter

Q.23 —–

Q.24 Rhombus

Q.25 i) 550 ii) 775 iii) 4375

Q.26 36 km/hr

Q.27 Length = 7; Breadth = 4

Q.28 —–

Q.29 AP = \frac{40}{3} cm

Q.30 The section is made 20 cm above the base

Q.31 84cm^{2}

 

February 9, 2017

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