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Water is flowing at the rate of 7 metre per second through a circular pipe whose internal diameter is 2 centimetre into a cylindrical tank the radius of whose base is 40 cm determine the increase of water level in half hour

Posted by Danish Zehan 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 6 years ago

Internal diameter of pipe = 2 cm

Internal radius of pipe = 1 cm

radius of base of tank = 40 cm

Speed of water flowing out from pipe = 7 m / sec ={tex} 7\times\frac{100}{\frac{1}{60}}=7\times100\times60=42000\:cm/min{/tex}

Quantity of water flows out from pipe in 1 min = {tex} \pi\times1^2\times42000 cm³{/tex}

Quantity of water flows out from pipe in 30 min = {tex}\pi\times1^2\times42000\times30{/tex}

= 3960000 cm³

let H be the height of water level in tank

Quantity of water filled in tank in 30 min = 3960000 cm³

{tex}\pi\times40^2\times H=3960000{/tex}

{tex}H=3960000\times\frac{7}{22\times1600}{/tex}

H=787.5

Therefore, Water level increases to 787.5 cm in half hour.

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Find the coordinates of the midpoint of the line segment joining the points whose coordinates are (3/2, -5) and (-7/2, 4).

Posted by Aditya Shah 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Kajal Singh 6 years ago

[{3/2+(-7/2)/2},{(-5+4)}]

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a ladder of length 4m makes an angle of 45 degree with the ground when placed against an electric post determine the distance between the feet of the leader and the electric post

Posted by Aditya Shah 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Suraj Singh 6 years ago

find it yourself

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What about standard and basic maths??

Posted by Sakshi Vats 6 years ago

CBSE > Class 10 > Mathematics

2 answers

Sakshi Vats 6 years ago

Thnxx

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Suraj Singh 6 years ago

In standard you can take pcm or pcb but in basic maths you can only take pcb and if you want to take non med in basic maths you have to give standard and basic both examination

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α&β are the zeros of the polynomial p(x)=3x²+2x+1. Find polynomial whose zeroes are 1-α/1+α & 1-β/1+β

Posted by Harmeet Mutreja 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Suraj Singh 6 years ago

Easy

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If sinA=1 then find cosA?

Posted by Suraj Bisht 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Ayush Pandey 6 years ago

We know that, Sin^2A +Cos^2A=1 So, 1+Cos^2A=1 [putting sinA =1] Cos^2A=0 CosA=0 Hope this will help you.....

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Ram ? 6 years ago

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Bhavya Bhardwaj 6 years ago

sin2A+cos2A =1 1 + cos2A = 1 Cos2A = 1-1=0

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if cars going to opposite direction then speed will be?

Posted by Riya Soan 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Ayush Pandey 6 years ago

Relative speed = difference of their speed

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Danish Zehan 6 years ago

Negative

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Roman? Reigns? 6 years ago

Negative

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Volume of a frustum

Posted by Frince Frince T Francis 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Suraj Singh 6 years ago

Volume =1/3πh(r1{

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Suraj Singh 6 years ago

Murk

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Aadya Singh ? 6 years ago

Volume of frustum = 1/3πh(R^2+r^2+Rh)

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Find the largest number which is divisible by both 52 and 25

Posted by Ziya Yadav Yadav 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Danish Zehan 6 years ago

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Suraj Singh 6 years ago

Use hcf

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Aadya Singh ? 6 years ago

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The sum of the areas of two squares is 802m .the difference of their perimeter is 8m represent a quadratic equation to find the sides of the two square

Posted by Anupama Mishra 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Taneja Nitij 6 years ago

Let side of larger square be a Let side of smaller square be b According to question a^2+b^2=802--(1) Again according to question 4a-4b=8 4(a-b) =8 a-b=2 a=b+2--(2) Putting eq(2) in (1) (b+2)^2+b^2=802 b^2+4+4b+b^2=802 2b^2+4b+4-802=0 2(b^2+2b-396)=0 b^2+2b-396=0 Using quadratic formula Value of b =19m value of a=21m

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Construct a rightconstruct a right triangle whose hypotenuse and one side measure 10 cm and 8 cm then construct another triangle whose side are 4 by 5 time the corresponding side of triangle

Posted by Preetam Singh 6 years ago

CBSE > Class 10 > Mathematics