Introduction

Quantitative Analysis requires a lot of practice and hardwork since its an analytical subject. Before becoming an expert one should understand the basics of Quantitative Analysis for Government Bank Job Exams for SBI, RBI, RRB and IBPS. This section gives you all details about the basics of Quantitative Analysis. Here you can get the Free Notes and PDF downloads for Quantitative Analysis to prepare for the Bank PO and Clerical Jobs in India. Our experts are available incase you need any kind of online help to understand any topic or any kind of doubt clearing

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18. VOLUME AND SURFACE AREA

A. CUBOID

1. Let length = l , breadth = b and height = h units. Then,
2. Volume = (l x b x h) cubic units.
3. Surface area= 2(lb + bh + lh) sq.units.
4. Diagonal.=√l² +b² +h² units

B. CUBE

1. Let each edge of a cube be of length a. Then,
2. Volume = a³ cubic units.
3. Surface area = 6a² sq. units.
4. Diagonal = √3 a units.

C. CYLINDER

1. Let radius of base = r and Height (or length) = h. Then,
2. Volume = (π r²h) cubic units.
3. Curved surface area = (2πrh). units.
4. Total surface area =2πr (h+r) sq. units

D. CONE

1. Let radius of base = r and Height = h. Then,
2. Slant height, l =√ h²+r²
3. Volume = (1/3) π r²h cubic units.
4. Curved surface area = (πrl) sq. units.
5. Total surface area = (πrl + π r²) sq. units.

E. SPHERE

1. Let the radius of the sphere be r. Then,
2. Volume = (4/3) πr3 cubic units.
3. Surface area = (4 πr²) sq. units.

F. HEMISPHERE

1. Let the radius of a hemisphere be r. Then,
2. Volume = (2/3) πr³ cubic units.
3. Curved surface area = (2 πr²) sq. units.
4. Total surface area = (3 πr²) units.

Remember: 1 litre = 1000 cm3.

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