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Naruto Uzumaki??? 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Total number of balls = 11+ 7 + 5= 23
Number of green balls = 11
Number of yellow balls = 7
Total number of balls that are not white= 11 + 7 = 18
Probability of getting a not a white ball = 18/23
Rajeshri Kute 5 years, 4 months ago
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Narender Kumar 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Radius (r) of the base of cone = 10.5/2
= 5.25 cm
Slant height (l) of cone = 10 cm
CSA of cone = πrl
= 22/7 × 5.25 × 10
= 22 × 0.75 × 10
= 165 cm2
Therefore, the curved surface area of the cone is 165 cm2
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Yogita Ingle 5 years, 4 months ago
WE have,
∠B - ∠D = 60o (i)
Since, ABCD is a cyclic quadrilateral
Then,
∠B+ ∠D = 180o (ii)
Adding (i) and (ii), we get
∠B - ∠D + ∠B + ∠D = 60o + 180o
2 ∠B = 240o
∠B = 120o
Put value of ∠B in (ii), we get
120o + ∠D = 180o
∠D = 60o
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