√.00059049 = √59049/100000000

Correct Option: B

√.00059049 = √59049/100000000
= √59049 / 10000
= 243/10000
= 0.0243

Given expression = √15625 + √15625/100 + √15625/10000

Correct Option: C

Given expression = √15625 + √15625/100 + √15625/10000
= (125 + 125/10 + 125/100)
= (125 + 12.5 + 1.25)
= 138.75

Let , √1296 / N = N / 2.25
Then, 36/N = N /2.25 or N²= 36 x 225/100

Correct Option: D

Let , √1296 / N = N / 2.25
Then, 36/N = N /2.25 or N²= 36 x 225/100
∴ N = √(36 x 225) /100 = (6 x 15) / 10 = 9

Sum of decimal places being equal in Num. and Denom. of given expression
So ,Given expression is equivalent to
√(324 x 81 x 4624) / (15625 x 289 x 729 x 64)

Correct Option: C

Sum of decimal places being equal in Num. and Denom. of given expression
So ,Given expression is equivalent to
√(324 x 81 x 4624) / (15625 x 289 x 729 x 64)
= (18 x 9 x 68) / (125 x 17 x 27 x 8)
= 3/125
= 0.024

Given expression = √0.0009 / √0.01
= √0.0009 / 0.0100
= √9 / 100
= √9 / √100

Correct Option: B

Given expression = √0.0009 / √0.01
= √0.0009 / 0.0100
= √9 / 100
= √9 / √100
= 3 / 10
= 0.3