Only numbers bigger than or equal to zero have real square roots. 625 = 5x5x5x5 = 54. What are the multiples of 625? 625 is a number with 3 digits. RD Sharma Solutions for Class 8 Maths Exercise 3.5 Chapter 3 – Squares and Square Roots. Number of digits of 625. Find the number of digits in the square root of each of the following numbers (without any calculation): (i) 64 (ii) 144 (iii) 4489 (iv) 27225 (v) 390625. As a consequence, 625 is the square root of 390 625. (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36. Eighth Root of x 8 √x : Eighth Root of x 8 √x : 8th root of 1: 1,0000: 8th root of 26: 1,5027: 8th root of 2: 1,0905: 8th root of 27: 1,5098: 8th root of 3: 1,1472: 8th root of 28 Its square root is 625; The cube root of 390625 is 73.1004434553; Scales and comparisons How big is 390625? (i) Here, 64 contains two digits which is even. Find the square root of the following decimal numbers: (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36 Solution. 390625 is a perfect square number. Chapter 3: Squares and Square Roots Exercise 3.5 | Q 1.04 | Page 43 Advertisement Find the Square Root the Following by Long Division Method: 390625 Concept: Square Roots - Finding Square Root by … Exercise 3.5 of RD Sharma Solutions for Chapter 3 Squares and Square Roots, this exercise primarily deals with the concepts related to the long division method, which provides the means for detecting the square root of a perfect square by the long division method. A square root of a number is a number that, when it is multiplied by itself (squared), gives the first number again. To count from 1 to 390,625 would take you about four days. Therefore, number of digits in square root = ( that is 8, which is single digit number) (ii) Here, 144 contains three digits which is odd. The square of 625 is 390 625 because 625 × 625 = 625 2 = 390 625. The Square root of 625 is of course 25.. Ans. Square root of 625 = 6251/2 = 54/2 = 52 = 25. 390,625 seconds is equal to 4 days, 12 hours, 30 minutes, 25 seconds. The square root of 625 is 25 390625 36 [6*6] (6__) 306 -244 [122*2] (62_) 06225 [1245*5] (625) —6225 _____0 →remainder is 0, hence it is a perfect square There you go the square root of 390625 is 625. Find the least number which must be subtracted from each of the following numbers so as to get a perfect square. Question 4. For example, 2 is the square root of 4, because 2x2=4. Method of prime factorization makes it more clear, i.e. Square root of 390625 is 73.1004434553 ; Scales and comparisons How big is?... Scales and comparisons How big is 390625 days, 12 hours, minutes. Ii ) 7.29 ( iii ) 51.84 ( iv ) 42.25 ( )! 625 × 625 = 625 2 = 390 625 of 390 625,. ) Here, 64 contains two digits which is even is 390 625 because 625 × =! Its square root is 625 ; the cube root of 4, because 2x2=4, 2 is square! 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