NCERT Solutions for Class 8 Mathematics Chapter 9
Important NCERT Questions
Algebraic Expressions and Identities Chapter 9 Exercise 9.2
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 4
Obtain the volume of rectangular boxes with the following length, breadth and height respectively: (i) 5a, 3a²7a⁴ (ii) 2p,4q,8r
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Solution:—
.°.Length of rectangle-5a ,
Breadth of rectangle-3a^2
Height of rectangle-7a^4
=Volume of rectangle- L×B×H—=5a×3a^2×7a^4=105a^6
(i) Volume of rectangular box = length x breadth x height
= 5ax3a²x7a⁴=(5x3x7)(axa²xa⁴)
= 105a⁷ cubic units
(ii) Volume of rectangular box = length x breadth x height
= 2px4qx8r= (2x4x8)(pxqxr)
= 64 pqr cubic units
Class 8 Maths Chapter 9 Exercise 9.2 Solution in Video
for more answers vist to:
https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-9/