Question

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Answer 1

Answer:

Ans11. 90°

Ans12. 1000 l

Ans13. classmark

Ans14. and impossible event

Ans15. then the volume will be halved

Ans16. tow angles be x

other two angles be x- 40

(opp. angles of llgm are equal)

x+x+x-40+x-40 = 360°

( angle sum property of a quadrilateral)

4x - 80 = 360°

4x = 360° + 80

4x = 440

x = 440/4

x = 110°

therefore, x = 110°

x - 40 = 110 - 40 = 70°

x = 110°

x - 40 = 110 -40 = 70°

thus, the largest angle is 110°

Hope it's useful......

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Answer 2

$\huge \mathcal{answer : - - }$

11. Right Angle(90°)

12. 1000 litre

13. Classmark

14. Zero event or impossible event

15. The volume is halved

16.

Let a pair of opposite angles be x

And the other pair be x-40

(Opposite angles are equal in parallelogram)

x+x+(x-40)+(x-40)=360°(Angles Sum Property)

=>4x-80°=360°

=>4x=360°+80°

=>x=440°/4

=110°

Now,

A pair of opposite angles=x=110°

And the other pair=x-40°=110°-40°=70°

Largest angle=110°

#hope it helps....