# 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