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# Question 1.Find the volume of the cylinder if height (h) and radius of the base (r) are as given below.(1) r = 10.5 cm, h = 8 cm(2) r = 2.5 m, h = 7 m(3) r = 4.2 cm, h = 5 cm(4) r = 5.6 cm, h = 5 cmAnswer:Volume of cylinder=π × r2 × h1. r = 10.5 cm, h = 8 cmVolume = π × r2 × h= 3.14 × 10.52 × 8= 2772 cm32. r = 2.5 m, h = 7 mVolume = π × r2 × h= 3.14 × 2.52 × 7= 137.5 cm33. r = 4.2 cm, h = 5 cmVolume = π × r2 × h= 3.14 × 4.22 × 5= 277.2 cm34. r = 5.6 cm, h = 5 cmVolume = π × r2 × h= 3.14 × 5.62 × 5= 492.8 cm3Question 2.How much iron is needed to make a rod of length 90 cm and diameter 1.4 cm?Answer:Given,length/height of the cylindrical rod = 90 cmThe radius of rod Here, we need to calculate the amount of iron required to make a rod.That mean, we need to calculate the volume of the rod.Volume of rod = π × r2 × h= 3.14 × 0.72 × 90= 138.6 cm3∴ Amount of iron required is 138.6 cm3Question 3.How much water will a tank hold if the interior diameter of the tank is 1.6 m and its depth is 0.7 m?Answer:Given,Radius Height = 0.7 mThe volume of tank = π × r2 × h= 3.14 × 0.82 × 0.7= 1.408 m3Now, 1m3 = 1000 litre1.408 m3 = 1408 litre∴ The tank can hold 1408 liter of waterQuestion 4.Find the volume of the cylinder if the circumference of the cylinder is 132 cm and height is 25 cm.Answer:Given,Circumference = 132 cmHeight = 25 cmVolume = ?The circumference of cylinder = 2 × π × r132 = 2 × π × rThe volume of cylinder = π × r2 × h= 3.14 × 212 × 25= 34650 cm3∴ The volume of the cylinder is 34650 cm3

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2019 Board Paper Solution

HSC ENGLISH SET A 2019 21st February, 2019

HSC ENGLISH SET B 2019 21st February, 2019

HSC ENGLISH SET C 2019 21st February, 2019

HSC ENGLISH SET D 2019 21st February, 2019

SECRETARIAL PRACTICE (S.P) 2019 25th February, 2019

HSC XII PHYSICS 2019 25th February, 2019

CHEMISTRY XII HSC SOLUTION 27th, February, 2019

OCM PAPER SOLUTION 2019 27th, February, 2019

HSC MATHS PAPER SOLUTION COMMERCE, 2nd March, 2019

HSC MATHS PAPER SOLUTION SCIENCE 2nd, March, 2019

SSC ENGLISH STD 10 5TH MARCH, 2019.

HSC XII ACCOUNTS 2019 6th March, 2019

HSC XII BIOLOGY 2019 6TH March, 2019

HSC XII ECONOMICS 9Th March 2019

SSC Maths I March 2019 Solution 10th Standard11th, March, 2019

SSC MATHS II MARCH 2019 SOLUTION 10TH STD.13th March, 2019

SSC SCIENCE I MARCH 2019 SOLUTION 10TH STD. 15th March, 2019.

SSC SCIENCE II MARCH 2019 SOLUTION 10TH STD. 18th March, 2019.

SSC SOCIAL SCIENCE I MARCH 2019 SOLUTION20th March, 2019

SSC SOCIAL SCIENCE II MARCH 2019 SOLUTION, 22nd March, 2019

XII CBSE - BOARD - MARCH - 2019 ENGLISH - QP + SOLUTIONS, 2nd March, 2019

HSC Maharashtra Board Papers 2020

(Std 12th English Medium)

HSC ECONOMICS MARCH 2020

HSC OCM MARCH 2020

HSC ACCOUNTS MARCH 2020

HSC S.P. MARCH 2020

HSC ENGLISH MARCH 2020

HSC HINDI MARCH 2020

HSC MARATHI MARCH 2020

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SSC Maharashtra Board Papers 2020

(Std 10th English Medium)

English MARCH 2020

HindI MARCH 2020

Hindi (Composite) MARCH 2020

Marathi MARCH 2020

Mathematics (Paper 1) MARCH 2020

Mathematics (Paper 2) MARCH 2020

Sanskrit MARCH 2020

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