Is the adjoining figure a quadrilateral ? give reasons supporting your answer​

Answer:

O is the centre of the circle.

CD is the diameter, CD = 5 cm

EF is the chord parallel to CD, EF = 3 cm

OG is perpendicular drawn on EF from O.

In ΔOGE we have,

∠OGE = 90° [∵ OG is perpendicular on EF]

OE = 5/2 = 2.5 cm [∵ Diameter = 5 cm]

EG = 3/2 = 1.5 cm [∵perpendicular drawn from centre bisects chord]

∴ Area of the quadrilateral,

= 8 cm2

The answers are Radius of circle 5 cm

               Area of Quadrilateral  = 20 cm²

Given: Bottom side of the quadrilateral is diameter of the circle

From given picture bottom of the quadrilateral AB = 10cm

and CD = 6 cm

To find: Radius of the circle and area of the quadrilateral

Solution:

a) Radius of circle

given that diameter of circle = bottom of quadrilateral  

⇒ diameter of circle 2r = 10 cm

⇒ Radius of circle r = 10/2 = 5 cm

∴ Radius of circle 5 cm

b) Area of the quadrilateral

Draw a line by joining mid points of AB and CD

and join mid point of AB and vertice C then a right angle triangle POC  is formed as show figure

In triangle POC  ⇒  OC² = OP²+ PC²  

[ here OC = radius = 5 cm and PC = [tex]\frac{1}{2} (CD)[/tex] = 3 cm ]

⇒  5 ² = OP²+ 3²  

⇒ OP² = 5² - 3² = 25 - 9 = 16

⇒ OP² = 4²

⇒ OP = 4  is the altitude/height of trapezium

Therefore, area of trapezium =  [tex]\frac{1}{2} (base)(height)[/tex]  

⇒ [tex]\frac{1}{2} (10)(4)[/tex] = 5(4) = 20 cm²

∴ Area of triangle = 20 cm²

#SPJ2

Answer:

Surface tension is defined as the force per unit length acting at right angles to an imaginary line drawn on the free surface of the liquid.

Explanation:

Answer:

My Christmas Vacation Essay: Most countries around the world consider Christmas to be the most anticipated holiday season of the year. This is because Christmas is a time of love, family, friends, and giving. It is the time when people are reminded what matters most in life. Unsurprisingly, many people tend to take vacations with their family and friends during this time of year.

And to actually have a good Christmas vacation, one has to plan accordingly. The following essay will provide you with helpful insights on how to prepare for your best Christmas vacation yet. We’ll go over some of the best tips and tricks on how to get ready for your Christmas vacation including packing, planning, and what to do once you’re there.

Answer:

Explanation:

My Christmas Holidays:

On my Christmas Holidays I didn’t have any day I didn’t make anything.

On 25th December I went to my grandpa and my grandma’s house to have the Christmas lunch. In the afternoon I went to see “Pastorets”, and in the evening I stayed in my home with my family and we watched the TV.

On 26th December I went to my other grandma’s house for having another Christmas lunch. And in the afetrnoon I went to see “Pastorets again.

In 31st December I went to campelles with my cousin and my aunt, and two other families and we slept two nights in a hotel. In the night we ate the grapes at 00:00, we laughed a lot and we had fun.

In the morning of 5th Jenuary I went to visit the “pageboys” of the kings and in the evening I went with my little cousin to give the letter to the kings of “Orient”.

And on 6th I opened the presents in my house and at my grandmpa’s house and we had lunch, and for dessert we ate the ring-shaped cake of the kings.

I had a very nice Christmas holidays… But there were very short!!!

Answer:

तब वह तलवार भले ही लोहे की हो, अपने काम में अधिक कारगर सिद्ध होती है। इसके विपरीत, यदि इस तलवार की धार मोटी है, भद्दी है तब वह तलवार, सोने की ही क्यों न हो, हमारे किसी काम की नहीं हो सकती है। इसी प्रकार, यदि किसी का चरित्र नष्ट हो गया हो, तब वह मुर्दे से भी बदतर है, क्योंकि मुर्दा तो किसी और मनुष्य का बुरा नहीं कर सकता, पर एक चरित्र