/O ExегCI
1. Find the cubes of the following numbers :
(a) - 27
(e) 11/12
(b) 0.9
11
(d) 0.06
(e)
(c) 3.5
- 2
(1)
7
12
by alternative method :
Answers
Answer:
Step-by-step explanation:
In Exercise 4.1 of RD Sharma Class 8 Maths Chapter 4 Cubes and Cube Roots, we shall discuss problems based on the cubes of natural numbers and perfect cube numbers along with their properties, finding cube of a two-digit number by column method. Students can refer and download RD Sharma Class 8 Solutions Maths from the links provided below. RD Sharma Solutions provides ample questions along with their solutions, shortcut techniques and detailed explanations are provided by our expert tutors, which help students score well in their examination.
1. Find the cubes of the following numbers:
(i) 7 (ii) 12
(iii) 16 (iv) 21
(v) 40 (vi) 55
(vii) 100 (viii) 302
(ix) 301
Solution:
(i) 7
Cube of 7 is
7 = 7× 7 × 7 = 343
(ii) 12
Cube of 12 is
12 = 12× 12× 12 = 1728
(iii) 16
Cube of 16 is
16 = 16× 16× 16 = 4096
(iv) 21
Cube of 21 is
21 = 21 × 21 × 21 = 9261
(v) 40
Cube of 40 is
40 = 40× 40× 40 = 64000
(vi) 55
Cube of 55 is
55 = 55× 55× 55 = 166375
(vii) 100
Cube of 100 is
100 = 100× 100× 100 = 1000000
(viii) 302
Cube of 302 is
302 = 302× 302× 302 = 27543608
(ix) 301
Cube of 301 is
301 = 301× 301× 301 = 27270901