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Match box is a cuboid having its length(l), breadth(b) and height(h) as 4 cm, 2.5 cm and 1.5 cm respectively. Volume of 1 match box = l × b × h = ( 4 × 2.5 × 1.5 ) c m 3 = 15 c m 3 Hence, Volume of 12 such matchboxes = ( 15 × 12 ) c m 3 = 180 c m 3

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What is the smallest number

Posted by Ashutosh Chauhan 2 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Arshdeep Kaur 2 years, 1 month ago

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Ashutosh Chauhan 2 years, 3 months ago

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Find the zeros of p(x) = 5x + 8/11

Posted by Kanishka Ingale 2 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Arshdeep Kaur 2 years, 1 month ago

P(x)=5x+8/11=0≈5x=11/8≈x=11/8×5≈x=11/40

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Uttam Verma 2 years, 3 months ago

p(0)=5(0)+8/11 p(0)=8/11

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R K 2 years, 3 months ago

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A hemispherical bowl is made of steel, 0.25cm thick. The inner radius of the bowl is 5cm. Find the outer curved surface area of the bowl.

Posted by Praveen Patidar 2 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Uttam Verma 2 years, 3 months ago

Inner radius of hemispherical bowl = 5 cm Thickness of the bowl = 0.25 cm ∴ Outer radius (r) of hemispherical bowl = (5 + 0.25) cm = 5.25 cm Outer CSA of hemispherical bowl = 2r2 Therefore, the outer curved surface area of the bowl is 173.25 cm2.

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Uttam Verma 2 years, 3 months ago

r = 5 c m , thickness of steel sheet = 0.25 c m ⇒ R = 5 c m + 0.25 c m = 5.25 c m outer curved surface area of the bowl = 2 π R 2 = 2 × 22 7 × 525 100 × 525 100 c m 2 = 173.25 c m 2

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If 3 is a zero of x cube minus 4x square + 7k ,then find k

Posted by Aditi Das 2 years, 3 months ago

CBSE > Class 09 > Mathematics

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In a right angle triangle prove that the line segment joining the midpoint of hypotenuse to the opposite vertex is half the hypotenuse

Posted by Ablin Jose 2 years, 3 months ago

CBSE > Class 09 > Mathematics

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Calculate the perimeter of a rectangle whose area is 25x2 -35x+12

Posted by Bablu Parmar 2 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Lakshyasingh Singh 2 years, 3 months ago

Half yearly exam question paper in maths

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Kartik Devidas 2 years, 3 months ago

Ksnd

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Factorize following 3x+√3x-2

Posted by Priyanshu Singh Rawat Rawat 2 years, 3 months ago

CBSE > Class 09 > Mathematics

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Find two rational number and two irrational number between root 3 and root 4

Posted by Y. Harkesh 2 years, 3 months ago

CBSE > Class 09 > Mathematics

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Simplify √5√5√5√5.......

Posted by Manshi Nayak 2 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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√5√5√5√5.......

Posted by Manshi Nayak 2 years, 3 months ago

CBSE > Class 09 > Mathematics

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Factories x2 +13x2 +32x +20

Posted by Muskan Jaiswal 2 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Manshi Nayak 2 years, 3 months ago

60x+20 is the right 👍

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Muskan Jaiswal 2 years, 3 months ago

By long division

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Muskan Jaiswal 2 years, 3 months ago

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Find the curved surface area and total surface area of cone whose height is 21 cm and whose volume is 7546cm cube

Posted by Ankita Kapoor 2 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Mudit Jhanwar 2 years, 3 months ago

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If x square+2kn+4=0 has root x=0 find the value of k

Posted by Anand Kumar Patel 2 years, 3 months ago

CBSE > Class 09 > Mathematics

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2+2 kitne hote hai

Posted by Ajay Yadav 2 years, 3 months ago

CBSE > Class 09 > Mathematics

5 answers

Piru Singh 2 years, 3 months ago

Two circles of ready 5 cm and 3 cm in the sector 2 and the distance between centres is 4 cm find the length of the common car

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Shourya Sharma 2 years, 3 months ago

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Parnit Kaur Sidhu 2 years, 3 months ago

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Dollymochi'S Girl 2 years, 3 months ago

What a question 😂

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Dona Mathew 2 years, 3 months ago

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If a=3+√5/2, then find the value of a^2+1/a^2

Posted by Garvit Chauhan 2 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Shreedhar Bhise Bhise 2 years, 3 months ago

Bhag idhrse

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Krushna Solanke 2 years, 3 months ago

a= 2 3+ 5∴ a 1= 3+ 52On rationaliging the denominator , we get , a 1= (3+ 5)(3− 5) 2(3− 5)= 9−5 6−2 5= 4 6−2 5= 2 3− 5Also, (a+ a 1) 2 =a 2 + a 2 1+2 Substituting the values of a  = a 1, We get , `( 2 3+ 5+ 2 3− 5) 2 =(a 2 + a 2 1+2) ∴a 2 + a 2 1+2=( 2 3+ 5+3− 5) 2 =(3) 2 =9 ∴a 2 + a 2 1=9−2=7.

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Dollymochi'S Girl 2 years, 3 months ago

a= 2 3+ 5 ∴ a 1 = 3+ 5 2 On rationaliging the denominator , we get , a 1 = (3+ 5 )(3− 5 ) 2(3− 5 ) = 9−5 6−2 5 = 4 6−2 5 = 2 3− 5 Also, (a+ a 1 ) 2 =a 2 + a 2 1 +2 Substituting the values of a  = a 1 , We get , `( 2 3+ 5 + 2 3− 5 ) 2 =(a 2 + a 2 1 +2) ∴a 2 + a 2 1 +2=( 2 3+ 5 +3− 5 ) 2 =(3) 2 =9 ∴a 2 + a 2 1 =9−2=7.

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In a mathematics test given to 15 students, the following marks ( out of 100) are recorded {[41,39,48,52,46,62,54,40,96,52,98,40,42,52,60 ]} find mean , median, mode of this data

Posted by Rj K 2 years, 3 months ago

CBSE > Class 09 > Mathematics