Q.No.7. Make a list of 20 perfect squares having at least 4 digits. Also write their square roots. Similarly, make a list of 15 perfect cubes and their cube roots.
Answers
Given : a list of 20 perfect squares having at least 4 digits
To find : Numbers and their square root
Solution:
32² ≤ perfect squares having at least 4 digits ≤ 99²
Square root Number
40 1600
50 2500
60 3600
70 4900
80 6400
90 8100
Similarly
41 1681
42 1764
43 1849
44 1936
45 2025
46 2116
47 2209
48 2304
49 2401
51 2601
52 2704
53 2809
54 2916
55 3025
56 3136
57 3249
58 3364
59 3481
4 Digit prefect cubes can be maximum 12
10 1000
11 1331
12 1728
13 2197
14 2744
15 3375
16 4096
17 4913
18 5832
19 6859
20 8000
21 9261
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