Maharashtra Board Class 8 Math Surface area and Volume Chapter Practice Set 3 Solution

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.

Updated: March 17, 2020 — 4:53 pm

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