Question

Q questions 16,17,18​

Answer 1

Answer:

Step-by-step explanation:

For question number 16

angle BOE is equal to 30 degree

Reflex angle EOC is 250 degree

Answer 2

ans. 1)

If we roll rectangular sheet then length is became circumference of cylinder and breath became height .

$2.\pi . r = 66 \: cm \\ 2 \times \frac{22}{7} \times r = 66cm \\ r = \frac{66 \times 7}{22\times 2} \\ r = 10.5 \: cm$

Now we have to find volume of cylinder :

$= \pi {r}^{2} h \\ = \frac{22}{7} \times 10.5 \times 10.5 \times 12 \\ = 4158 {cm}^{3}$

ans. 2)

In given figure,

angle BOD = angle AOC { vertically oppo.

angle }

[【angle AOC = 40°】]

angle AOC + angle BOE = 70°

40° + angle BOE = 70°

[ 【angle BOE = 30°】]

angle AOC + angle BOE + angle EOC=180

70°+ angle EOC = 180°

[ 【angle EOC = 110°】 ]

reflex angle EOC + angle EOC = 360°

ref. angle EOC + 110° = 360°

[ 【 reflex angle EOC = 250°】 ]

______________________________________

mark as brainliest answer.

I don't know answer of 3rd sum sorry.

but,

______________________________________

mark as brainliest answer.