Question

pls help me with the questions no spamming otherwise ur answer will be reported its urgent for me for a test class 8 cbse ch-square Nd square roots and cube and cube roots​

Answer 1

Answer:

1 . Show that 8281 is a perfect square

Solution :

Last two digits of 8281 are 81 which is a square root of 9 ( 9² = 81 )

So 8281 is a perfect square .

And also by digital root check, 8+2+8+1 = 19

= 9+1 = 10 = 1+0 = 1 .

2 . Evaluate :

(15³) = 15×15×15 = 3375

(60³) = 60×60×60 = 216000

3 . Find the largest number of 2 digits which is a perfect square

Solution :

Whole number less than 10 is 9 , So largest Number of 2 digits which is a perfect square is 9² = 81

( 10²= 100 and it is a third digit number so you should take the below number that is 9 )