Question

question number 10 to 12

Answer 1

Volume of Cone :- 216π cm²


$\frac{1}{3} \pi {r}^{2}h = 216\pi$

$\frac{1}{3} \times 9 \times 9 \times h = 216$

27h = 216

h = 216/27

h = 8 cm


12 )

P ( E1 ) = Probability of guessing the correct ans

P ( E1 ) = x / 2

P ( E2 ) = Probability of not guessing the correct

P ( E2 ) = x /3


As we know that

Sum of the probability of same set is 1

P ( E1 ) + P ( E2 ) = 1

$\frac{x}{2} + \frac{x}{3} = 1$

$\frac{3x + 2x}{6 } = 1$

5x = 6

x = 6/5