Maha Board (MSBHSE) Class 8 Math (गणित) Surface area and Volume Practice Set 16.3 Solution (Page No. 112) in our website. Here candidates of Marathi Medium & English Medium of Maharashtra State can follow this to get Most Easy Solution of Maharashtra Board Class 8 Chapter 16: Surface area and Volume (Practice Set 16.3).
Maharashtra Board Class 8 Math Practice Set 16.3 Solution | BalBharati Class 8 Mathematics Chapter 16 Solution:
Subject | Mathematics (गणित) |
Class | 8 (८) |
Chapter | 16 |
Practice Set | 16.3 |
Practice Set 16.3 Solution (Page No. 112)
(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
Solution: Given, r = 10.5 cm, h = 8 cm.
Volume = πr2h
= 22/7 x 10.5 x 10.5 x 8
= 2772 cm
(2) r = 2.5 m, h = 7 m
Solution: Given, r = 2.5 m, h = 7 m.
Volume = πr2h
= 22/7 x 2.5 x 2.5 x 7
= 137.5 cm.
(3) r = 4.2 cm, h = 5 cm
Solution: Given, r = 4.2 cm, h = 5 cm.
Volume = πr2h’
= 22/7 x 4.2 x 4.2 x 5
= 277.2 cm.
(4) r = 5.6 cm, h = 5 cm
Solution: Given, r = 5.6 cm, h = 5 cm
Volume = πr2h
= 22/7 x 5.6 x 5.6 x 5
= 492.8 cm
(2) How much iron is needed to make a rod of length 90 cm and diameter 1.4 cm?
Solution: Iron rod length = 90 cm; diameter = 1.4 cm.
r = 1.4/2
= 0.7 cm.
Volume = πr2h
= 22/7 x 0.7 x 0.7 x 90
= 138.6 cm.
(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?
Solution: Tank Diameter (D) = 1.6 m
r = D/2
= 1.6/2
= 0.8 m.
Depth (h) 0.7 m.
Volume = πr2h
= 22/7 x 0.8 x 0.8 x 0.7
= 1.408
= 1408 litre.
(4) Find the volume of the cylinder if the circumference of the cylinder is 132 cm and height is 25 cm.
Solution: Cylinder Circumference = 132 cm.
height = 25 cm.
∴ 2πr = 132
=) 2 x 22/7 x r = 132
=) r = 132 x 7/2 x 22
= 21
Volume = πr2h
= 22/7 x 21 x 21 25
= 34650 cm
Rules:
Curved Surface area of Cylinder = 2πrh
Total surface area of cylinder = 2πr(r + h)
Volume of cylinder = πr2h
Latest Edition BalBharati Math Solution for Standard 8th Chapter 16.3. Any Kinds of problem to understand, Feel free to comment us below. Thank You.