CBSE > Class 08 | CBSE Board | Homework Help

Let the height be h. Volume of the cylinder =3080cm Radius =7cm π=722 Volume of cylinder =3080 πr2h=3080 ⇒722×7×7×h=3080 ⇒154×h=3080 ⇒h=1543080 ⇒h=20cm Curved surface area of the cylinder =2πrh =2×722×7×20 =2×22×20 =880cm2.

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If the edge of cube is doubled a . Find the ratio of the original volume to new volume b . Find the ratio of new surface area to the original surface area.

Posted by Sundram Jha 4 years, 11 months ago

CBSE > Class 08 > Mathematics

1 answers

Shruti ? 4 years, 11 months ago

a) Ratio = 1:8 b) Let the length of the edge of the cube be 'x' cm (i) Total surface area = 6x² cm² Increased length of the edge = 2x Total surface area = 6(2x)² cm² = 24x² cm² If the edge of the cube is doubled surface area of the cube increases by 4 times. Ratio = 1:4

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What is the surface area of an open cubical box having each edge as 8 m

Posted by Manan Rathi 4 years, 11 months ago

CBSE > Class 08 > Mathematics

1 answers

Sia ? 4 years, 6 months ago

384 m²

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Whenever there is a fire we called the

Posted by Priyanka Tomar 4 years, 11 months ago

CBSE > Class 08 > Science

3 answers

Khushboo Sharma 4 years, 11 months ago

Fire bigade

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Kanishk Dhandhu 4 years, 11 months ago

Fire brigade

3Thank You

Anjali Kumari 4 years, 11 months ago

Fire brigade...

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सु + पच् + ल्यप प्रत्यय =

Posted by Garima G 4 years, 9 months ago

CBSE > Class 08 > Sanskrit

1 answers

Dharmik Gohil 4 years, 11 months ago

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What makes you say savitri was a good daughter ?

Posted by Vishnu N.B 4 years, 11 months ago

CBSE > Class 08 > English

1 answers

Nitin Choudhary 4 years, 11 months ago

Chapter?

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कथ् धातोः लट् लकार प्रथम पुरुष द्विवचने किम् अस्ति? *

Posted by Rohit Rawat 4 years, 11 months ago

CBSE > Class 08 > Sanskrit

0 answers

ANSWER

Allow

Posted by Aslam Khan 4 years, 11 months ago

CBSE > Class 08 > Sanskrit

2 answers

Diksha Laniya 4 years, 11 months ago

Aara mara matalab hai ke muja ans Nahum pata OK

2Thank You

Diksha Laniya 4 years, 11 months ago

I don't know this answer

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Happy new year belated

Posted by Diksha Laniya 4 years, 11 months ago

CBSE > Class 08 > Social Science

0 answers

ANSWER

What can you say about exponent of a polynomial?

Posted by Rachel Varghese 4 years, 11 months ago

CBSE > Class 08 > Mathematics

0 answers

ANSWER

asquare + 8a+ 16

Posted by Suba Ragav 4 years, 11 months ago

CBSE > Class 08 > Mathematics

1 answers

Shruti ? 4 years, 11 months ago

a²+8a+16 = a² + 4a + 4a + 16 = a(a+4) + 4(a+4) = (a+4)(a+4)

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सप्तभगिनी प्रदेशे क: उद्योग: सर्वप्रमुख:? *

Posted by Vedika B 4 years, 11 months ago

CBSE > Class 08 > Sanskrit

1 answers

Aslam Khan 4 years, 11 months ago

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If x varies inversely as y when x= 6 then y= 8,find y when x=8

Posted by Manav Jeet 4 years, 11 months ago

CBSE > Class 08 > Mathematics

2 answers

Suba Ragav 4 years, 11 months ago

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Zibiah Gonsalves 4 years, 11 months ago

6×8=8y , y=6×8/8=6 , y=6

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Define electric current

Posted by Sunny Kumar 4 years, 11 months ago

CBSE > Class 08 > Science

2 answers

Rhea Sharma 4 years, 11 months ago

The flow of electricity per unit time is called the electric current.

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Shruti ? 4 years, 11 months ago

An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge past a region.

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(2xy) ×(3xy²)

Posted by Hhhhhhh Kkkkkk 4 years, 11 months ago

CBSE > Class 08 > Mathematics

1 answers

Shruti ? 4 years, 11 months ago

6x²y³

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'भारतीया नारी त्यागस्य प्रतिमा, क्षमाशीला, साहसिनी स्नेहस्य दात्री च भवति' अनया किं रूपं प्रतिपादितम्? (क) नारीशक्तिः (ख) बहुआयामी-चरित्रम् (ग) अदम्यसाहसम्

Posted by Garima G 4 years, 11 months ago

CBSE > Class 08 > Sanskrit

1 answers

Anjali Kumari 4 years, 11 months ago

It's 1one..

5Thank You

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'यत्र नार्यस्तु पूज्यन्ते रमन्ते तत्र देवता:' अस्मिन् वाक्ये किं सामाजिक मूल्य वर्णितम्? (क) नार्यः देवैः सदृश्यः (ख) नार्यः सम्माननीयाः भवन्ति (ग) नार्यः पूजनीयाः भवन्ति

Posted by Garima G 4 years, 11 months ago

CBSE > Class 08 > Sanskrit

0 answers

ANSWER

Define khurda uprising a case study in detail

Posted by Shalini Murthy 4 years, 11 months ago

CBSE > Class 08 > Social Science

1 answers

Diksha Laniya 4 years, 11 months ago

The paika rebellian,also called the paika bidhora .its is the first war of independence in India subcontinent .it was an armed rebellion against the British east Indian company`s rules in 1817.

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Given below are the marks obtained bye 30 students of a class in a test 10,8,12,17,19,17,41,40,12,46,37, 17,1,9,21,13,48,12,21,19,33,5,38, 39,19,23,2,6,30,27 Using tally mark prepare a frequency table sach that 20-30 is a class interval.

Posted by Aaryan Singh Chouhan 4 years, 11 months ago

CBSE > Class 08 > Mathematics

1 answers

Diksha Laniya 4 years, 11 months ago

Step by step explanation : .class mark.tally marks .frequency 5-10.3.4 10-15.3.3 15-20.7.7 20-25. 25-30.

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Fill in the blanks A _ is a soft ware that handle the various operation associated with a database

Posted by Nikita Rani 4 years, 11 months ago

CBSE > Class 08 > Computer

4 answers

Sharvesh Kumar 4 years, 11 months ago

Mohit kumar

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Sunny Roy 4 years, 11 months ago

What is computers

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Gigar Prjapati 4 years, 11 months ago

database management system.

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Disha Bhadouriya 4 years, 11 months ago

DBMS

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What gave good profit to British?

Posted by Vijay Karthick V Tharun Karthik 4 years, 11 months ago

CBSE > Class 08 > Social Science

1 answers

Aaryan Singh Chouhan 4 years, 11 months ago

British is to steal Indian gold and agriculture

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Which route was followed by foreigners to voyage in India?

Posted by Vijay Karthick V Tharun Karthik 4 years, 11 months ago

CBSE > Class 08 > Social Science

1 answers

?Saksham? ?? 4 years, 11 months ago

The Portuguese discovery of the sea route to India was the first recorded trip directly from Europe to India, via the Cape of Good Hope.[1] Under the command of Portuguese explorer Vasco da Gama, it was undertaken during the reign of King Manuel I in 1495–1499. Considered one of the most remarkable voyages of the Age of Discovery, it initiated the Portuguese maritime and trade presence in Kerala and the Indian Ocean.[2][3]

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How did Duttada's hobby and secret ambition made him succeed in his adventure?

Posted by Nishtha Singh 4 years, 6 months ago

CBSE > Class 08 > English

1 answers

Sia ? 4 years, 6 months ago

Duttada was an amateur astronomer. Star gazing was his hobby. But he had a scientific attitude. His secret ambition in life was to discover a comet or a shooting star. After his retirement he got the funds to buy a telescope and leisure enough to watch the stars. He named his eight-inch telescope Dibya-chakshu. He was successful in search. He discovered a comet heading towards the earth. It was called Dutta comet. The news spread world over. James Forsyth predicted that the comet would collide with the earth and destroy it. Dutta’s wife, Indrani Debi, was afraid that the comet would cause ruin. She arranged a Yajna to pacify the evil spirit behind the comet. But the world scientists prepared a plan to make a nuclear explosion and deflect the comet from its path. The operation was named Project Light Brigade. It was successful. The world was saved. But Indrani Debi gave all credit to the holy yajna she got performed.

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???

Posted by Akshay Kumar 4 years, 11 months ago

CBSE > Class 08 > French

2 answers

Rachit Jain 4 years, 11 months ago

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Akshay Kumar 4 years, 11 months ago

Soory

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IN WHAT WAY CAN GRASS MAKE THE HIGHWAY HAPPIER

Posted by Divyansh Jain 4 years, 6 months ago

CBSE > Class 08 > English

1 answers

Sia ? 4 years, 6 months ago

By these the poet wants us to know that no job is less important and we need not be ashamed of what we are. Although we all dream of doing great deeds and being at the top, what really matters is the contribution we make to the society to make it count.

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शब्दृरूपानी सवस्ट

Posted by Aleegra Elizabeth George 4 years, 11 months ago

CBSE > Class 08 > Sanskrit